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<!--XBRL Document Modified with Ez-Editor Version 1.0.2.9 by DataTracks on Wednesday, March 06, 2013 12:18:54 AM -->
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<roleRef xlink:type="simple" xlink:href="cik0000027825-20130215.xsd#Annualfundoperatingexpenses" roleURI="http://www.delawareinvestments.com/role/Annualfundoperatingexpenses"/>
<calculationLink xlink:type="extended" xlink:role="http://www.delawareinvestments.com/role/Annualfundoperatingexpenses"><loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_NetExpensesOverAssets" xlink:label="loc_rr_NetExpensesOverAssets"/>






<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesOverAssets" xlink:label="loc_rr_ExpensesOverAssets"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssets" xlink:label="loc_rr_FeeWaiverOrReimbursementOverAssets"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ManagementFeesOverAssets" xlink:label="loc_rr_ManagementFeesOverAssets_1"/>
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</calculationLink>
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