<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM DECEMBER 31,
1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               DEC-31-1998             DEC-31-1997
<CASH>                                          90,516                  29,426
<SECURITIES>                                         0                  64,018
<RECEIVABLES>                                  188,245                 169,924
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               284,507                 274,901
<PP&E>                                          84,493                  68,417
<DEPRECIATION>                                  55,470                  40,655
<TOTAL-ASSETS>                                 372,794                 328,085
<CURRENT-LIABILITIES>                           43,006                  36,016
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           486                     486
<OTHER-SE>                                           0                       0
<TOTAL-LIABILITY-AND-EQUITY>                   372,794                 328,085
<SALES>                                              0                       0
<TOTAL-REVENUES>                               188,376                 160,975
<CGS>                                                0                       0
<TOTAL-COSTS>                                        0                       0
<OTHER-EXPENSES>                               130,237                 105,289
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              (7,070)                 (7,762)
<INCOME-PRETAX>                                 65,209                  63,448
<INCOME-TAX>                                    28,545                  26,020
<INCOME-CONTINUING>                             36,664                  37,428
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    36,664                  37,428
<EPS-PRIMARY>                                      .75                     .77
<EPS-DILUTED>                                      .75                     .77