<ARTICLE>                     5
<LEGEND>
Financial Data Schedule information has been extracted from the Registrant's
Condensed Consolidated Balance Sheet (non-classified) as of June 30, 2000 and
the Condensed Consolidated Statement of Income for the six months then ended.


<MULTIPLIER>                                   1,000


                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-END>                                   JUN-30-2000
<CASH>                                              18,742
<SECURITIES>                                        41,079
<RECEIVABLES>                                       40,949
<ALLOWANCES>                                         3,850
<INVENTORY>                                              0
<CURRENT-ASSETS>                                         0
<PP&E>                                           3,073,023
<DEPRECIATION>                                     360,341
<TOTAL-ASSETS>                                   3,093,885
<CURRENT-LIABILITIES>                                    0
<BONDS>                                          1,317,389
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                          1,318
<COMMON>                                               612
<OTHER-SE>                                       1,622,124
<TOTAL-LIABILITY-AND-EQUITY>                     3,093,885
<SALES>                                            227,224
<TOTAL-REVENUES>                                   227,224
<CGS>                                               56,668
<TOTAL-COSTS>                                       56,668
<OTHER-EXPENSES>                                         0
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                  45,223
<INCOME-PRETAX>                                     99,655
<INCOME-TAX>                                             0
<INCOME-CONTINUING>                                 99,655
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                        99,655
<EPS-BASIC>                                           1.42
<EPS-DILUTED>                                         1.41