<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MARCH 31,
2000 FINANCIAL STATEMENTS AS AMENDED ON FORM 10Q/A AMENDMENT NO. 1 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> MAR-31-2000
<CASH> 200,933
<SECURITIES> 0
<RECEIVABLES> 20,494
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 274,650
<PP&E> 546,207
<DEPRECIATION> 449,972
<TOTAL-ASSETS> 1,019,788
<CURRENT-LIABILITIES> 110,765
<BONDS> 400,039
0
369,553
<COMMON> 361
<OTHER-SE> 124,955
<TOTAL-LIABILITY-AND-EQUITY> 1,019,788
<SALES> 74,505
<TOTAL-REVENUES> 74,505
<CGS> 15,831
<TOTAL-COSTS> 15,831
<OTHER-EXPENSES> 14,009
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 4,750
<INCOME-PRETAX> 37,075
<INCOME-TAX> 10,551
<INCOME-CONTINUING> 26,524
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 26,524
<EPS-BASIC> 0.53
<EPS-DILUTED> 0.45
</TABLE>