<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   12-MOS                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996             DEC-31-1995
<PERIOD-END>                               DEC-31-1997             DEC-31-1996             DEC-31-1995
<CASH>                                          92,087                  14,127                  11,128
<SECURITIES>                                    13,165                       0                       0
<RECEIVABLES>                                   81,547                  59,666                  63,051
<ALLOWANCES>                                     1,742                   1,203                     840
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                               189,860                  74,847                  63,051
<PP&E>                                          12,801                  10,423                   8,133
<DEPRECIATION>                                   7,101                   5,788                   4,343
<TOTAL-ASSETS>                                 217,746                  96,611                  82,931
<CURRENT-LIABILITIES>                           29,369                  19,794                  20,539
<BONDS>                                              0                   1,432                   3,299
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                         3,125                   2,837                   2,767
<OTHER-SE>                                     182,969                  70,911                  55,139
<TOTAL-LIABILITY-AND-EQUITY>                   217,746                  96,611                  82,931
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                               350,310                 261,411                 224,492
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                  233,574                 180,409                 155,918
<OTHER-EXPENSES>                                75,129                  59,677                  48,764
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               1,424                   (103)                   (323)
<INCOME-PRETAX>                                 43,044                  22,106                  19,849
<INCOME-TAX>                                    18,498                   9,031                   8,550
<INCOME-CONTINUING>                             24,546                  13,076                  11,298
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    24,546                  13,076                  11,298
<EPS-PRIMARY>                                     0.89                    0.50                    0.46
<EPS-DILUTED>                                     0.85                    0.47                    0.44
        

</TABLE>