<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1995 <PERIOD-END> SEP-30-1995 <CASH> 154,419 <SECURITIES> 31,425 <RECEIVABLES> 76,755 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 278,624 <PP&E> 217,509 <DEPRECIATION> 123,069 <TOTAL-ASSETS> 432,502 <CURRENT-LIABILITIES> 96,635 <BONDS> 0 <COMMON> 266,525 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 15,913 <TOTAL-LIABILITY-AND-EQUITY> 432,502 <SALES> 274,821 <TOTAL-REVENUES> 274,821 <CGS> 82,642 <TOTAL-COSTS> 159,946 <OTHER-EXPENSES> (3,862) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,820 <INCOME-PRETAX> 36,095 <INCOME-TAX> 4,790 <INCOME-CONTINUING> 31,305 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 31,305 <EPS-PRIMARY> .57 <EPS-DILUTED> .57