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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2050-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01375000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.125% 05/15/2048</title>
        <cusip>912810SC3</cusip>
        <identifiers>
          <isin value="US912810SC36"/>
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        <balance>273142000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>202594542.81000000</valUSD>
        <pctVal>1.021571228914</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2048-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03125000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.5% 02/15/2044</title>
        <cusip>912810TZ1</cusip>
        <identifiers>
          <isin value="US912810TZ12"/>
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        <balance>4900000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>4646960.96000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04500000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.625% 02/15/2053</title>
        <cusip>912810TN8</cusip>
        <identifiers>
          <isin value="US912810TN81"/>
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        <balance>342780000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>273755354.61000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2053-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03625000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.875% 02/15/2051</title>
        <cusip>912810SU3</cusip>
        <identifiers>
          <isin value="US912810SU34"/>
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        <balance>611705000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>334693436.49000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01875000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.625% 02/15/2040</title>
        <cusip>912810QE1</cusip>
        <identifiers>
          <isin value="US912810QE10"/>
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        <balance>30743000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>30403145.67000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2040-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04625000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.25% 02/15/2052</title>
        <cusip>912810TD0</cusip>
        <identifiers>
          <isin value="US912810TD00"/>
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        <balance>1404440000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>836300131.25000000</valUSD>
        <pctVal>4.216994895186</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02250000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.375% 11/15/2049</title>
        <cusip>912810SK5</cusip>
        <identifiers>
          <isin value="US912810SK51"/>
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        <balance>361492000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>226906833.00000000</valUSD>
        <pctVal>1.144164541758</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2049-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02375000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4% 11/15/2052</title>
        <cusip>912810TL2</cusip>
        <identifiers>
          <isin value="US912810TL26"/>
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        <balance>387400000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>331544788.09000000</valUSD>
        <pctVal>1.671795359892</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.625% 11/15/2050</title>
        <cusip>912810SS8</cusip>
        <identifiers>
          <isin value="US912810SS87"/>
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        <balance>24100000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>12373843.75000000</valUSD>
        <pctVal>0.062394389260</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2050-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01625000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.25% 08/15/2049</title>
        <cusip>912810SJ8</cusip>
        <identifiers>
          <isin value="US912810SJ88"/>
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        <balance>269047000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>164602115.17000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2049-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02250000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.625% 05/15/2044</title>
        <cusip>912810UB2</cusip>
        <identifiers>
          <isin value="US912810UB25"/>
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        <balance>341000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>328292423.58000000</valUSD>
        <pctVal>1.655395500531</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04625000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.75% 02/15/2037</title>
        <cusip>912810PT9</cusip>
        <identifiers>
          <isin value="US912810PT97"/>
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        <balance>28863000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>29626290.98000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2037-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04750000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.75% 08/15/2042</title>
        <cusip>912810QX9</cusip>
        <identifiers>
          <isin value="US912810QX90"/>
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        <balance>252260000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>189086606.40000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02750000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.5% 02/15/2045</title>
        <cusip>912810RK6</cusip>
        <identifiers>
          <isin value="US912810RK60"/>
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        <balance>686749000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>472515506.79000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2045-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02500000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.75% 11/15/2042</title>
        <cusip>912810QY7</cusip>
        <identifiers>
          <isin value="US912810QY73"/>
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        <balance>193274000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>144170324.38000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02750000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.875% 11/15/2051</title>
        <cusip>912810TB4</cusip>
        <identifiers>
          <isin value="US912810TB44"/>
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        <balance>353820000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>191698572.08000000</valUSD>
        <pctVal>0.966628928621</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01875000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.625% 05/15/2054</title>
        <cusip>912810UA4</cusip>
        <identifiers>
          <isin value="US912810UA42"/>
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        <balance>473400000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>450303259.00000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2% 02/15/2050</title>
        <cusip>912810SL3</cusip>
        <identifiers>
          <isin value="US912810SL35"/>
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        <balance>435249000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>249248060.16000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.625% 11/15/2044</title>
        <cusip>912810UF3</cusip>
        <identifiers>
          <isin value="US912810UF39"/>
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        <curCd>USD</curCd>
        <valUSD>210438703.13000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04625000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 02/15/2048</title>
        <cusip>912810SA7</cusip>
        <identifiers>
          <isin value="US912810SA79"/>
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        <balance>595209000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>432293785.11000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2048-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.125% 02/15/2042</title>
        <cusip>912810QU5</cusip>
        <identifiers>
          <isin value="US912810QU51"/>
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        <balance>154840000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>123908291.40000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03125000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.125% 02/15/2043</title>
        <cusip>912810QZ4</cusip>
        <identifiers>
          <isin value="US912810QZ49"/>
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        <balance>140221000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>110517152.66000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03125000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.75% 11/15/2053</title>
        <cusip>912810TV0</cusip>
        <identifiers>
          <isin value="US912810TV08"/>
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        <balance>757200000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>734779777.46000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2053-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04750000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.25% 05/15/2041</title>
        <cusip>912810SY5</cusip>
        <identifiers>
          <isin value="US912810SY55"/>
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        <balance>831582000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>591917473.06000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02250000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.875% 05/15/2049</title>
        <cusip>912810SH2</cusip>
        <identifiers>
          <isin value="US912810SH23"/>
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        <balance>596099000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>418060991.00000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2049-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02875000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.75% 11/15/2043</title>
        <cusip>912810RD2</cusip>
        <identifiers>
          <isin value="US912810RD28"/>
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        <balance>103069000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>88313223.50000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03750000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.875% 02/15/2041</title>
        <cusip>912810SW9</cusip>
        <identifiers>
          <isin value="US912810SW99"/>
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        <balance>633606000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>426743537.93000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01875000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 5% 05/15/2037</title>
        <cusip>912810PU6</cusip>
        <identifiers>
          <isin value="US912810PU60"/>
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        <balance>111927000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>117243532.50000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.05000000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.5% 02/15/2039</title>
        <cusip>912810QA9</cusip>
        <identifiers>
          <isin value="US912810QA97"/>
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        <balance>128034000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>113395112.26000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2039-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03500000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.75% 08/15/2047</title>
        <cusip>912810RY6</cusip>
        <identifiers>
          <isin value="US912810RY64"/>
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        <balance>458264000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>319299021.04000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02750000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.375% 08/15/2042</title>
        <cusip>912810TK4</cusip>
        <identifiers>
          <isin value="US912810TK43"/>
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        <balance>262860000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>216376904.81000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03375000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.5% 05/15/2046</title>
        <cusip>912810RS9</cusip>
        <identifiers>
          <isin value="US912810RS96"/>
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        <balance>136970000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>92508253.22000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2046-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02500000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2% 08/15/2051</title>
        <cusip>912810SZ2</cusip>
        <identifiers>
          <isin value="US912810SZ21"/>
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        <balance>835220000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>469289237.50000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.125% 08/15/2044</title>
        <cusip>912810UD8</cusip>
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        <curCd>USD</curCd>
        <valUSD>28935976.48000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 08/15/2048</title>
        <cusip>912810SD1</cusip>
        <identifiers>
          <isin value="US912810SD19"/>
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        <curCd>USD</curCd>
        <valUSD>147424804.30000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.5% 02/15/2036</title>
        <cusip>912810FT0</cusip>
        <identifiers>
          <isin value="US912810FT08"/>
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        <curCd>USD</curCd>
        <valUSD>116221829.17000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.875% 11/15/2046</title>
        <cusip>912810RU4</cusip>
        <identifiers>
          <isin value="US912810RU43"/>
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        <balance>11125000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>8016953.13000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.25% 11/15/2040</title>
        <cusip>912810QL5</cusip>
        <identifiers>
          <isin value="US912810QL52"/>
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        <balance>47867000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>45013677.81000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04250000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.375% 11/15/2048</title>
        <cusip>912810SE9</cusip>
        <identifiers>
          <isin value="US912810SE91"/>
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        <balance>310991000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>240495656.53000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 02/15/2049</title>
        <cusip>912810SF6</cusip>
        <identifiers>
          <isin value="US912810SF66"/>
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        <balance>376287000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>270985434.84000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2049-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.75% 02/15/2041</title>
        <cusip>912810QN1</cusip>
        <identifiers>
          <isin value="US912810QN19"/>
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        <balance>110773000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>110145575.08000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04750000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.375% 05/15/2051</title>
        <cusip>912810SX7</cusip>
        <identifiers>
          <isin value="US912810SX72"/>
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        <balance>768174000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>475277657.62000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02375000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.125% 05/15/2040</title>
        <cusip>912810SR0</cusip>
        <identifiers>
          <isin value="US912810SR05"/>
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        <balance>74617000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>45329827.50000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.375% 11/15/2040</title>
        <cusip>912810ST6</cusip>
        <identifiers>
          <isin value="US912810ST60"/>
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        <balance>544763000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>339732080.47000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 05/15/2042</title>
        <cusip>912810QW1</cusip>
        <identifiers>
          <isin value="US912810QW18"/>
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        <balance>79079000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>61876228.67000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.75% 11/15/2047</title>
        <cusip>912810RZ3</cusip>
        <identifiers>
          <isin value="US912810RZ30"/>
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        <balance>267357000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>185750451.87000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02750000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.875% 05/15/2052</title>
        <cusip>912810TG3</cusip>
        <identifiers>
          <isin value="US912810TG31"/>
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        <balance>245380000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>168574143.58000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02875000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.5% 05/15/2038</title>
        <cusip>912810PX0</cusip>
        <identifiers>
          <isin value="US912810PX00"/>
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        <curCd>USD</curCd>
        <valUSD>29182113.21000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.375% 11/15/2039</title>
        <cusip>912810QD3</cusip>
        <identifiers>
          <isin value="US912810QD37"/>
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        <balance>67400000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>64888297.21000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2039-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04375000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.5% 11/15/2054</title>
        <cusip>912810UE6</cusip>
        <identifiers>
          <isin value="US912810UE63"/>
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        <balance>604100000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>563889593.75000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2054-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04500000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.375% 02/15/2038</title>
        <cusip>912810PW2</cusip>
        <identifiers>
          <isin value="US912810PW27"/>
        </identifiers>
        <balance>57424000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>56430295.48000000</valUSD>
        <pctVal>0.284546491242</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2038-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04375000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4% 11/15/2042</title>
        <cusip>912810TM0</cusip>
        <identifiers>
          <isin value="US912810TM09"/>
        </identifiers>
        <balance>251320000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>225039389.69000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04000000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.25% 08/15/2054</title>
        <cusip>912810UC0</cusip>
        <identifiers>
          <isin value="US912810UC08"/>
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        <balance>522300000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>467050453.13000000</valUSD>
        <pctVal>2.355074814707</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2054-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04250000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.375% 05/15/2044</title>
        <cusip>912810RG5</cusip>
        <identifiers>
          <isin value="US912810RG58"/>
        </identifiers>
        <balance>122930000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>99030679.60000000</valUSD>
        <pctVal>0.499356456773</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03375000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UST NOTES</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UST NOTES 4.75% 02/15/2045</title>
        <cusip>912810UJ5</cusip>
        <identifiers>
          <isin value="US912810UJ50"/>
        </identifiers>
        <balance>4300000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>4197203.13000000</valUSD>
        <pctVal>0.021164153288</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2045-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04750000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 08/15/2052</title>
        <cusip>912810TJ7</cusip>
        <identifiers>
          <isin value="US912810TJ79"/>
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        <balance>470480000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>331743535.55000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.25% 05/15/2039</title>
        <cusip>912810QB7</cusip>
        <identifiers>
          <isin value="US912810QB70"/>
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        <balance>13257000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>12679595.47000000</valUSD>
        <pctVal>0.063936124570</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04250000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Fidelity Revere Street Trust</name>
        <lei>549300BDV45LJNXBZC55</lei>
        <title>Fidelity Cash Central Fund</title>
        <cusip>31635A105</cusip>
        <identifiers>
          <isin value="US31635A1051"/>
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        <balance>262577501.87800000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>262630017.38000000</valUSD>
        <pctVal>1.324296626569</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.75% 08/15/2041</title>
        <cusip>912810QS0</cusip>
        <identifiers>
          <isin value="US912810QS06"/>
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        <balance>107358000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>94366005.07000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03750000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.625% 02/15/2044</title>
        <cusip>912810RE0</cusip>
        <identifiers>
          <isin value="US912810RE01"/>
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        <balance>142857000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>119871531.56000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03625000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2% 11/15/2041</title>
        <cusip>912810TC2</cusip>
        <identifiers>
          <isin value="US912810TC27"/>
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        <balance>915080000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>616713874.27000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02000000</annualizedRt>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 11/15/2045</title>
        <cusip>912810RP5</cusip>
        <identifiers>
          <isin value="US912810RP57"/>
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        <balance>381862000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>284472274.47000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2045-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 1.75% 08/15/2041</title>
        <cusip>912810TA6</cusip>
        <identifiers>
          <isin value="US912810TA60"/>
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        <curCd>USD</curCd>
        <valUSD>180801400.09000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.01750000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.25% 02/15/2054</title>
        <cusip>912810TX6</cusip>
        <identifiers>
          <isin value="US912810TX63"/>
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        <balance>222500000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>198729003.35000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2054-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04250000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.875% 08/15/2045</title>
        <cusip>912810RN0</cusip>
        <identifiers>
          <isin value="US912810RN00"/>
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        <balance>18732000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>13694116.45000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2045-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02875000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 02/15/2047</title>
        <cusip>912810RV2</cusip>
        <identifiers>
          <isin value="US912810RV26"/>
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        <balance>489794000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>359979458.65000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-02-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Fidelity Revere Street Trust</name>
        <lei>549300BDV45LJNXBZC55</lei>
        <title>Fidelity Securities Lending Cash Central Fund</title>
        <cusip>31635A303</cusip>
        <identifiers>
          <isin value="US31635A3032"/>
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        <balance>95288996.10500000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>95298525.00000000</valUSD>
        <pctVal>0.480537283717</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="95298525.00000000" isCashCollateral="Y"/>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.125% 08/15/2053</title>
        <cusip>912810TT5</cusip>
        <identifiers>
          <isin value="US912810TT51"/>
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        <balance>482900000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>422216825.43000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
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          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.625% 05/15/2053</title>
        <cusip>912810TR9</cusip>
        <identifiers>
          <isin value="US912810TR95"/>
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        <balance>741700000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>591708560.45000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 05/15/2045</title>
        <cusip>912810RM2</cusip>
        <identifiers>
          <isin value="US912810RM27"/>
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        <curCd>USD</curCd>
        <valUSD>118421876.10000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.375% 05/15/2041</title>
        <cusip>912810QQ4</cusip>
        <identifiers>
          <isin value="US912810QQ40"/>
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        <balance>104568000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>99482564.32000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>Fixed</couponKind>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 11/15/2044</title>
        <cusip>912810RJ9</cusip>
        <identifiers>
          <isin value="US912810RJ97"/>
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        <balance>172537000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>129968887.03000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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          <isPaidKind>N</isPaidKind>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3% 05/15/2047</title>
        <cusip>912810RX8</cusip>
        <identifiers>
          <isin value="US912810RX81"/>
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        <balance>234862000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>172100635.67000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03000000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.875% 05/15/2043</title>
        <cusip>912810RB6</cusip>
        <identifiers>
          <isin value="US912810RB61"/>
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        <balance>241482000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>182375508.55000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02875000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.375% 08/15/2043</title>
        <cusip>912810TU2</cusip>
        <identifiers>
          <isin value="US912810TU25"/>
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        <balance>88670000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>82934159.38000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04375000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.875% 05/15/2043</title>
        <cusip>912810TS7</cusip>
        <identifiers>
          <isin value="US912810TS78"/>
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        <balance>236000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>206661093.60000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-05-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03875000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.75% 11/15/2043</title>
        <cusip>912810TW8</cusip>
        <identifiers>
          <isin value="US912810TW80"/>
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        <balance>383000000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>375504571.27000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04750000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.625% 08/15/2043</title>
        <cusip>912810RC4</cusip>
        <identifiers>
          <isin value="US912810RC45"/>
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        <balance>393132000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>331689769.26000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03625000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.125% 11/15/2041</title>
        <cusip>912810QT8</cusip>
        <identifiers>
          <isin value="US912810QT88"/>
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        <curCd>USD</curCd>
        <valUSD>47536083.72000000</valUSD>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.03125000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 3.25% 05/15/2042</title>
        <cusip>912810TH1</cusip>
        <identifiers>
          <isin value="US912810TH14"/>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.5% 02/15/2046</title>
        <cusip>912810RQ3</cusip>
        <identifiers>
          <isin value="US912810RQ31"/>
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        <curCd>USD</curCd>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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          <maturityDt>2046-02-15</maturityDt>
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          <annualizedRt>0.02500000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.375% 02/15/2042</title>
        <cusip>912810TF5</cusip>
        <identifiers>
          <isin value="US912810TF57"/>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2042-02-15</maturityDt>
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          <annualizedRt>0.02375000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.375% 05/15/2040</title>
        <cusip>912810QH4</cusip>
        <identifiers>
          <isin value="US912810QH41"/>
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        <curCd>USD</curCd>
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        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
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          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04375000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 4.5% 08/15/2039</title>
        <cusip>912810QC5</cusip>
        <identifiers>
          <isin value="US912810QC53"/>
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        <balance>48244000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>47209392.46000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.04500000</annualizedRt>
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      <invstOrSec>
        <name>UNITED STATES TREASURY BOND</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>UNITED STATES TREASURY BOND 2.25% 08/15/2046</title>
        <cusip>912810RT7</cusip>
        <identifiers>
          <isin value="US912810RT79"/>
        </identifiers>
        <balance>172941000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>110661973.04000000</valUSD>
        <pctVal>0.558006579173</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2046-08-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.02250000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="As of March 2025, monthly returns presented in Item B.5.a. have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2025-06-30</ncom:dateSigned>
      <ncom:nameOfApplicant>Laura M. Del Prato</ncom:nameOfApplicant>
      <ncom:signature>Laura M. Del Prato</ncom:signature>
      <ncom:signerName>Laura M. Del Prato</ncom:signerName>
      <ncom:title>President and Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
