<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED SEPTEMBER 30,
2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-END> SEP-30-2000
<CASH> $ 29,150,118
<SECURITIES> 1,321,226
<RECEIVABLES> 47,286,580
<ALLOWANCES> (2,467,619)
<INVENTORY> 16,849,446
<CURRENT-ASSETS> 94,832,790
<PP&E> 94,107,498
<DEPRECIATION> (45,640,252)
<TOTAL-ASSETS> 220,665,450
<CURRENT-LIABILITIES> 46,832,142
<BONDS> 0
0
0
<COMMON> 18,166,996
<OTHER-SE> 108,688,713
<TOTAL-LIABILITY-AND-EQUITY> 220,665,450
<SALES> 262,364,902
<TOTAL-REVENUES> 262,364,902
<CGS> 144,276,094
<TOTAL-COSTS> 144,276,094
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 1,487,883
<INCOME-PRETAX> 45,938,350
<INCOME-TAX> 18,015,431
<INCOME-CONTINUING> 27,922,919
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 27,912,919
<EPS-BASIC> 1.80
<EPS-DILUTED> 1.76
</TABLE>