<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENTS OF OPERATIONS AND THE CONSOLIDATED BALANCE SHEETS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 102,268
<SECURITIES> 0
<RECEIVABLES> 31,244
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 138,223
<PP&E> 311,590
<DEPRECIATION> 59,180
<TOTAL-ASSETS> 390,663
<CURRENT-LIABILITIES> 50,515
<BONDS> 0
0
0
<COMMON> 263
<OTHER-SE> 336,038
<TOTAL-LIABILITY-AND-EQUITY> 390,663
<SALES> 62,767
<TOTAL-REVENUES> 62,767
<CGS> 0
<TOTAL-COSTS> 6,353
<OTHER-EXPENSES> 34,809
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 631
<INCOME-PRETAX> 22,320
<INCOME-TAX> 5,766
<INCOME-CONTINUING> 16,554
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 16,554
<EPS-BASIC> 0.77
<EPS-DILUTED> 0.73
</TABLE>