<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM BALANCE
SHEET/INCOME STATEMENT AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             APR-01-1997             JAN-01-1997
<PERIOD-END>                               JUN-30-1997             JUN-30-1997
<CASH>                                               0                  16,204
<SECURITIES>                                         0                  45,678
<RECEIVABLES>                                        0                 131,651
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                 197,066
<PP&E>                                               0                  36,890
<DEPRECIATION>                                       0                  23,973
<TOTAL-ASSETS>                                       0                 257,428
<CURRENT-LIABILITIES>                                0                  37,598
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                   6,633
<OTHER-SE>                                           0                       0
<TOTAL-LIABILITY-AND-EQUITY>                         0                 257,428
<SALES>                                        151,966                 293,076
<TOTAL-REVENUES>                                     0                       0
<CGS>                                                0                       0
<TOTAL-COSTS>                                  132,962                 257,527
<OTHER-EXPENSES>                                   373                     515
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                  50                     100
<INCOME-PRETAX>                                 19,474                  36,750
<INCOME-TAX>                                     8,374                  15,802
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    11,100                  20,948
<EPS-PRIMARY>                                      .16                     .31
<EPS-DILUTED>                                      .16                     .31