<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AT 9-30-00 AND CONDENSED CONSOLIDATED
STATEMENT OF EARNINGS FOR THE 9 MONTHS ENDED 9-30-00 AND RELATED NOTES TO
CONDENSED CONSOLIDATED FINANCIAL STATEMENT CONTAINED IN THE COMPANY'S 3RD
QTR 2000 10Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 142,998
<SECURITIES> 230
<RECEIVABLES> 375,967
<ALLOWANCES> 11,088
<INVENTORY> 0
<CURRENT-ASSETS> 525,542
<PP&E> 183,716
<DEPRECIATION> 79,775
<TOTAL-ASSETS> 660,834
<CURRENT-LIABILITIES> 320,966
<BONDS> 0
0
0
<COMMON> 514
<OTHER-SE> 339,354
<TOTAL-LIABILITY-AND-EQUITY> 660,834
<SALES> 0
<TOTAL-REVENUES> 1,228,903
<CGS> 0
<TOTAL-COSTS> 833,992
<OTHER-EXPENSES> 306,605
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 91,689
<INCOME-TAX> 34,592
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 57,097
<EPS-BASIC> 1.12
<EPS-DILUTED> 1.05
</TABLE>