<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996             DEC-31-1995
<PERIOD-START>                             JAN-01-1997             JAN-01-1996             JAN-01-1995
<PERIOD-END>                               DEC-31-1997             DEC-31-1996             DEC-31-1995
<CASH>                                          91,990                 150,013                       0
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   15,876                  44,293                       0
<ALLOWANCES>                                     1,354                     838                       0
<INVENTORY>                                     11,650                   6,607                       0
<CURRENT-ASSETS>                               124,052                 251,041                       0
<PP&E>                                         308,988                 207,027                       0
<DEPRECIATION>                                  74,643                  44,455                  18,834
<TOTAL-ASSETS>                                 433,864                 417,187                 346,741
<CURRENT-LIABILITIES>                           98,166                  82,487                  86,265
<BONDS>                                        230,000                 150,000                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            64                      55                      55
<OTHER-SE>                                      94,383                 123,344                 162,011
<TOTAL-LIABILITY-AND-EQUITY>                   433,864                 417,187                 346,741
<SALES>                                        200,939                 209,707                 352,575
<TOTAL-REVENUES>                               211,456                 219,636                 367,757
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                  313,222                 271,034                 258,908
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                              24,331                  22,186                   6,579
<INCOME-PRETAX>                              (119,438)                (65,932)                 107,825
<INCOME-TAX>                                  (22,775)                (24,463)                  40,062
<INCOME-CONTINUING>                                  0                       0                       0
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                  (96,663)                (41,469)                  67,763
<EPS-PRIMARY>                                   (1.72)                  (0.76)                    1.24
<EPS-DILUTED>                                   (1.72)                  (0.76)                    1.13


</TABLE>