<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

                             
<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
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                    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