<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> DEC-31-1997 <CASH> 116,443 <SECURITIES> 0 <RECEIVABLES> 55,229 <ALLOWANCES> 11,462 <INVENTORY> 13,011 <CURRENT-ASSETS> 212,310 <PP&E> 2,153,340 <DEPRECIATION> 675,286 <TOTAL-ASSETS> 2,005,506 <CURRENT-LIABILITIES> 210,950 <BONDS> 924,397 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 10,104 <OTHER-SE> 725,399 <TOTAL-LIABILITY-AND-EQUITY> 2,005,506 <SALES> 0 <TOTAL-REVENUES> 1,619,210 <CGS> 0 <TOTAL-COSTS> 1,360,526 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 79,071 <INCOME-PRETAX> 183,648 <INCOME-TAX> 68,746 <INCOME-CONTINUING> 107,522 <DISCONTINUED> 0 <EXTRAORDINARY> 8,134 <CHANGES> 0 <NET-INCOME> 99,388 <EPS-PRIMARY> 0.99 <EPS-DILUTED> 0.98