<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 9-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-1999
<PERIOD-START> JAN-01-2000 JAN-01-1999
<PERIOD-END> SEP-30-2000 SEP-30-1999
<CASH> 61,108 6,857
<SECURITIES> 0 0
<RECEIVABLES> 27,656 18,354
<ALLOWANCES> (2,475) (1,483)
<INVENTORY> 0 0
<CURRENT-ASSETS> 0 0
<PP&E> 1,449,457 1,354,043
<DEPRECIATION> 194,563 165,000
<TOTAL-ASSETS> 1,414,052 1,244,920
<CURRENT-LIABILITIES> 0 0
<BONDS> 673,556 526,667
0 0
0 0
<COMMON> 265 279
<OTHER-SE> 443,683 478,259
<TOTAL-LIABILITY-AND-EQUITY> 1,414,052 1,244,920
<SALES> 0 0
<TOTAL-REVENUES> 137,757 118,797
<CGS> 0 0
<TOTAL-COSTS> 65,905 54,846
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 1,413 1,744
<INTEREST-EXPENSE> 27,800 18,420
<INCOME-PRETAX> 42,639 43,787
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 42,639 43,787
<DISCONTINUED> 11,256 75
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 38,060<F1> 31,617
<EPS-BASIC> 1.43 1.14
<EPS-DILUTED> 1.42 1.14
<FN>
<F1>NET INCOME INCLUDES EQUITY ON INCOME OF UNCONSOLIDATED SUBSIDIARY OF $11 AND
MINORITY INTERESTS OF ($15,846)
</FN>
</TABLE>