<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
FOR THE THREE MONTHS ENDED MARCH 31, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 6-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000
<PERIOD-START> APR-01-2000 JAN-01-2000
<PERIOD-END> JUN-30-2000 JUN-30-2000
<CASH> 45,761 45,761
<SECURITIES> 0 0
<RECEIVABLES> 54,674 54,674
<ALLOWANCES> (7,720) (7,720)
<INVENTORY> 0 0
<CURRENT-ASSETS> 42,703 42,703
<PP&E> 4,092,120 4,092,120
<DEPRECIATION> (501,097) (501,097)
<TOTAL-ASSETS> 3,726,441 3,726,441
<CURRENT-LIABILITIES> 255,395 255,395
<BONDS> 2,493,098 2,493,098
0 0
482,000 482,000
<COMMON> 733 733
<OTHER-SE> 495,215 495,215
<TOTAL-LIABILITY-AND-EQUITY> 3,726,441 3,726,441
<SALES> 0 0
<TOTAL-REVENUES> 130,868 257,606
<CGS> 0 0
<TOTAL-COSTS> 73,238 145,055
<OTHER-EXPENSES> 4,070 9,704
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> (46,284) (91,716)
<INCOME-PRETAX> 15,416 30,539
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 15,416 30,539
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 15,416 30,539
<EPS-BASIC> 0.07 0.13
<EPS-DILUTED> 0.07 0.13
</TABLE>