<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S FORM 10-Q FOR THE PERIOD ENDED JUNE 30, 2000, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED IN SUCH REPORT.
</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> 3,018
<SECURITIES> 0
<RECEIVABLES> 12,878
<ALLOWANCES> 763
<INVENTORY> 0
<CURRENT-ASSETS> 15,133
<PP&E> 1,765,619
<DEPRECIATION> 71,284
<TOTAL-ASSETS> 1,727,926
<CURRENT-LIABILITIES> 37,355
<BONDS> 617,878
0
238,205
<COMMON> 0
<OTHER-SE> 815,486
<TOTAL-LIABILITY-AND-EQUITY> 1,727,926
<SALES> 0
<TOTAL-REVENUES> 101,986
<CGS> 0
<TOTAL-COSTS> 21,171
<OTHER-EXPENSES> 24,988
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 20,010
<INCOME-PRETAX> 27,664
<INCOME-TAX> 0
<INCOME-CONTINUING> 27,664
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 27,664
<EPS-BASIC> .63
<EPS-DILUTED> .63
</TABLE>