<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> JUN-30-2000 <CASH> 217,201,000 <SECURITIES> 0 <RECEIVABLES> 26,880,000 <ALLOWANCES> 2,133,000 <INVENTORY> 0 <CURRENT-ASSETS> 392,700,000 <PP&E> 665,353,000 <DEPRECIATION> (134,981,000) <TOTAL-ASSETS> 1,088,546,000 <CURRENT-LIABILITIES> 258,857,000 <BONDS> 499,577,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 2,631,000 <OTHER-SE> 327,481,000 <TOTAL-LIABILITY-AND-EQUITY> 1,088,546,000 <SALES> 26,619,000 <TOTAL-REVENUES> 322,621,000 <CGS> 27,723,000 <TOTAL-COSTS> 220,822,000 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 721,000 <INTEREST-EXPENSE> 23,959,000 <INCOME-PRETAX> 77,840,000 <INCOME-TAX> 29,696,000 <INCOME-CONTINUING> 48,144,000 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 48,144,000 <EPS-BASIC> 1.83 <EPS-DILUTED> 1.76