<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1999 FILED MARCH 10, 2000
WITH SECURITIES AND EXCHANGE COMMISSION AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH 10-K.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                         107,545
<SECURITIES>                                    35,283
<RECEIVABLES>                                    4,936
<ALLOWANCES>                                      (82)
<INVENTORY>                                          0
<CURRENT-ASSETS>                               150,267
<PP&E>                                          20,038
<DEPRECIATION>                                (15,183)
<TOTAL-ASSETS>                                 163,540
<CURRENT-LIABILITIES>                            6,661
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           205
<OTHER-SE>                                     156,566
<TOTAL-LIABILITY-AND-EQUITY>                   163,540
<SALES>                                              0
<TOTAL-REVENUES>                                38,036
<CGS>                                                0
<TOTAL-COSTS>                                   12,180
<OTHER-EXPENSES>                                16,204
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  27
<INCOME-PRETAX>                                 13,354
<INCOME-TAX>                                     4,688
<INCOME-CONTINUING>                              8,666
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,666
<EPS-BASIC>                                       0.47
<EPS-DILUTED>                                     0.44