<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This financial data schedule is submitted in accordance with Regulation S-K item
601(c)(2). This schedule contains summary financial information extracted from
Form 10-Q for the six month period 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> 16,655
<SECURITIES> 21,663
<RECEIVABLES> 84,466
<ALLOWANCES> 25,859
<INVENTORY> 0
<CURRENT-ASSETS> 104,387<F1>
<PP&E> 4,227,871
<DEPRECIATION> 591,254
<TOTAL-ASSETS> 4,473,959
<CURRENT-LIABILITIES> 383,992<F2>
<BONDS> 3,401,538
0
41
<COMMON> 699
<OTHER-SE> 632,890
<TOTAL-LIABILITY-AND-EQUITY> 4,473,959
<SALES> 336,690
<TOTAL-REVENUES> 336,690
<CGS> 0
<TOTAL-COSTS> 197,825
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 3,341
<INTEREST-EXPENSE> 122,656
<INCOME-PRETAX> 65,308
<INCOME-TAX> 153
<INCOME-CONTINUING> 66,030
<DISCONTINUED> 0
<EXTRAORDINARY> 722
<CHANGES> 0
<NET-INCOME> 65,155
<EPS-BASIC> .84
<EPS-DILUTED> .83
<FN>
<F1>Current assets include cash, unrestricted marketable securities, current
portion of accounts and notes receivable and prepaid expenses and deposits.
<F2>Current liabilities include the current portion of long-term debt and
accounts payable, accrued expenses and other liabilities.
</FN>
</TABLE>
