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<TABLE> <S> <C>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 95,797
<SECURITIES> 315,255
<RECEIVABLES> 46,332
<ALLOWANCES> 2,076
<INVENTORY> 2,474
<CURRENT-ASSETS> 469,430
<PP&E> 212,627
<DEPRECIATION> 109,905
<TOTAL-ASSETS> 1,298,932
<CURRENT-LIABILITIES> 45,300
<BONDS> 0
0
0
<COMMON> 227
<OTHER-SE> 845,110
<TOTAL-LIABILITY-AND-EQUITY> 1,298,932
<SALES> 218,196
<TOTAL-REVENUES> 218,196
<CGS> 78,327
<TOTAL-COSTS> 78,327
<OTHER-EXPENSES> 14,005
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 3,795
<INCOME-PRETAX> 36,246
<INCOME-TAX> 15,224
<INCOME-CONTINUING> 20,860
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 20,860
<EPS-BASIC> 0.94
<EPS-DILUTED> 0.94
</TABLE>
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