WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM BALANCE
SHEET AND INCOME STATEMENT AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998
<PERIOD-START>                             OCT-01-1998             JAN-01-1998
<PERIOD-END>                               DEC-31-1998             DEC-31-1998
<CASH>                                               0                  51,696
<SECURITIES>                                         0                   6,165
<RECEIVABLES>                                        0                 231,030
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                 312,267
<PP&E>                                               0                  67,296
<DEPRECIATION>                                       0                  37,323
<TOTAL-ASSETS>                                       0                 457,560
<CURRENT-LIABILITIES>                                0                  91,800
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                   7,165
<OTHER-SE>                                           0                 356,648
<TOTAL-LIABILITY-AND-EQUITY>                         0                 457,560
<SALES>                                        293,773               1,076,198
<TOTAL-REVENUES>                                     0                       0
<CGS>                                                0                       0
<TOTAL-COSTS>                                  249,554                 906,011
<OTHER-EXPENSES>                                   570                   1,057
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   2                     163
<INCOME-PRETAX>                                 45,140                 174,156
<INCOME-TAX>                                    21,524                  77,807
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    23,616                  96,349
<EPS-PRIMARY>                                      .33                    1.36
<EPS-DILUTED>                                      .33                    1.33
        

</TABLE>