<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY CONSOLIDATED FINANCIAL INFORMATION EXTRACTED FROM
FORM 10-Q FOR THE NINE MONTH PERIOD ENDED SEPTEMBER 28, 1997 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-Q.
</LEGEND>
       
                                        
<PERIOD-TYPE>                              9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-28-1997
<CASH>                                       4,541,708
<SECURITIES>                                80,114,047
<RECEIVABLES>                               46,741,843
<ALLOWANCES>                                   332,621
<INVENTORY>                                          0
<CURRENT-ASSETS>                           136,074,287
<PP&E>                                      66,694,910
<DEPRECIATION>                              20,599,353
<TOTAL-ASSETS>                             196,369,189
<CURRENT-LIABILITIES>                       23,956,625
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       355,170
<OTHER-SE>                                 153,165,124
<TOTAL-LIABILITY-AND-EQUITY>               196,369,189
<SALES>                                              0
<TOTAL-REVENUES>                           147,893,818
<CGS>                                                0
<TOTAL-COSTS>                               84,490,781
<OTHER-EXPENSES>                            43,855,413
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                         (2,236,281)
<INCOME-PRETAX>                             21,789,187
<INCOME-TAX>                                 7,844,000
<INCOME-CONTINUING>                         13,945,187
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                13,945,187
<EPS-PRIMARY>                                      .38
<EPS-DILUTED>                                      .38