<ARTICLE>                                             5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE CONSOLIDATED BALANCE SHEET AND CONSOLIDATED STATEMENT OF
OPERATIONS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
CONSOLIDATED FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>  1000
       
                                                 

<PERIOD-TYPE>                                     9-MOS
<FISCAL-YEAR-END>                           DEC-31-1997
<PERIOD-END>                                SEP-30-1997
<CASH>                                            58459
<SECURITIES>                                      34644
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<ALLOWANCES>                                       4114
<INVENTORY>                                           0
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<PP&E>                                           292110
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<TOTAL-ASSETS>                                   716207
<CURRENT-LIABILITIES>                            287327
<BONDS>                                           23042
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                           0
<COMMON>                                          17731
<OTHER-SE>                                       318573
<TOTAL-LIABILITY-AND-EQUITY>                     716207
<SALES>                                               0
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<CGS>                                                 0
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<INCOME-TAX>                                      12889
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<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
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<EPS-PRIMARY>                                      1.88
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