<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FORM
10-Q FOR THE SIX MONTHS ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 14,294
<SECURITIES> 0
<RECEIVABLES> 0
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 0
<PP&E> 5,173,627
<DEPRECIATION> 342,757
<TOTAL-ASSETS> 5,359,209
<CURRENT-LIABILITIES> 0
<BONDS> 2,149,285
0
292,371
<COMMON> 139,399
<OTHER-SE> 2,213,339
<TOTAL-LIABILITY-AND-EQUITY> 5,359,209
<SALES> 343,536
<TOTAL-REVENUES> 361,829
<CGS> 0
<TOTAL-COSTS> 184,653
<OTHER-EXPENSES> 15,170
<LOSS-PROVISION> 400
<INTEREST-EXPENSE> 71,527
<INCOME-PRETAX> 119,902
<INCOME-TAX> 0
<INCOME-CONTINUING> 119,902
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 119,902
<EPS-BASIC> 0.86
<EPS-DILUTED> 0.86
</TABLE>