<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY CONSOLIDATED FINANCIAL INFORMATION EXTRACTED FROM
FROM FORM 10-Q FOR THE SIX MONTH PERIOD ENDED JUNE 29, 1997 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-Q.
</LEGEND>
<MULTIPLIER> 1
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-29-1997
<CASH>                                       1,990,482
<SECURITIES>                                81,220,974
<RECEIVABLES>                               45,438,566
<ALLOWANCES>                                   426,192
<INVENTORY>                                          0
<CURRENT-ASSETS>                           132,551,944
<PP&E>                                      60,699,393
<DEPRECIATION>                              18,464,986
<TOTAL-ASSETS>                             188,315,764
<CURRENT-LIABILITIES>                       22,212,852
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       349,299
<OTHER-SE>                                 148,144,065
<TOTAL-LIABILITY-AND-EQUITY>               188,315,764
<SALES>                                              0
<TOTAL-REVENUES>                            95,134,724
<CGS>                                                0
<TOTAL-COSTS>                               55,052,489
<OTHER-EXPENSES>                            27,803,156
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                          (1,474,637)
<INCOME-PRETAX>                             13,827,806
<INCOME-TAX>                                 4,866,000
<INCOME-CONTINUING>                          8,961,806
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 8,961,806
<EPS-PRIMARY>                                     0.25
<EPS-DILUTED>                                     0.25