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<S> <C> <C>
<PERIOD-TYPE> 6-MOS 6-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-1999
<PERIOD-START> JAN-01-2000 JAN-01-1999
<PERIOD-END> JUN-30-2000 JUN-30-1999
<CASH> 7,725 4,028
<SECURITIES> 0 0
<RECEIVABLES> 110,100 78,641
<ALLOWANCES> 0 0
<INVENTORY> 7,494 7,905
<CURRENT-ASSETS> 141,518 103,655
<PP&E> 68,765 54,756
<DEPRECIATION> 0 0
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<CURRENT-LIABILITIES> 20,789 21,753
<BONDS> 0 0
0 0
0 0
<COMMON> 484 480
<OTHER-SE> 156,061 153,714
<TOTAL-LIABILITY-AND-EQUITY> 402,372 329,119
<SALES> 0 0
<TOTAL-REVENUES> 137,532 104,449
<CGS> 0 0
<TOTAL-COSTS> 0 0
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<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> (1,607) (762)
<INCOME-PRETAX> 47,063 34,827
<INCOME-TAX> 17,766 13,147
<INCOME-CONTINUING> 29,297 21,680
<DISCONTINUED> 0 0
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<CHANGES> 0 (678)
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<EPS-BASIC> 0.61 0.44
<EPS-DILUTED> 0.60 0.43
</TABLE>