<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 0
<SECURITIES> 0
<RECEIVABLES> 0
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 15,554
<PP&E> 1,986,757
<DEPRECIATION> (262,189)
<TOTAL-ASSETS> 1,912,282
<CURRENT-LIABILITIES> 63,725
<BONDS> 1,120,959
0
251,500
<COMMON> (185,995)
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 1,912,282
<SALES> 0
<TOTAL-REVENUES> 282,312
<CGS> 0
<TOTAL-COSTS> 142,530
<OTHER-EXPENSES> 8,507
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 57,109
<INCOME-PRETAX> 85,221
<INCOME-TAX> 0
<INCOME-CONTINUING> 85,221
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 67,445<F1>
<EPS-BASIC> 1.93
<EPS-DILUTED> 1.89
<FN>
<F1>Represents net income available to common unitholders
</FN>
</TABLE>