<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> DEC-31-1999 <CASH> 64,315 <SECURITIES> 54,811 <RECEIVABLES> 26,168 <ALLOWANCES> 716 <INVENTORY> 0 <CURRENT-ASSETS> 151,576 <PP&E> 27,907 <DEPRECIATION> 11,246 <TOTAL-ASSETS> 191,188 <CURRENT-LIABILITIES> 29,705 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 292 <OTHER-SE> 160,367 <TOTAL-LIABILITY-AND-EQUITY> 191,188 <SALES> 49,270 <TOTAL-REVENUES> 101,560 <CGS> 3,602 <TOTAL-COSTS> 19,325 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 26,429 <INCOME-TAX> 8,986 <INCOME-CONTINUING> 17,443 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,443 <EPS-BASIC> 0.64 <EPS-DILUTED> 0.58