<ARTICLE> 5 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> DEC-31-1999 <EXCHANGE-RATE> 1 <CASH> 57,546,406 <SECURITIES> 39,333,944 <RECEIVABLES> 40,967,509 <ALLOWANCES> 2,942,606 <INVENTORY> 19,863,508 <CURRENT-ASSETS> 157,523,691 <PP&E> 16,860,542 <DEPRECIATION> 5,320,103 <TOTAL-ASSETS> 232,878,096 <CURRENT-LIABILITIES> 44,354,054 <BONDS> 8,713 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 19,273 <OTHER-SE> 187,482,222 <TOTAL-LIABILITY-AND-EQUITY> 232,878,096 <SALES> 183,685,124 <TOTAL-REVENUES> 183,685,124 <CGS> 107,601,639 <TOTAL-COSTS> 158,756,266 <OTHER-EXPENSES> (3,786,792) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> (1,588,043) <INCOME-PRETAX> 30,303,693 <INCOME-TAX> 8,333,844 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 21,969,849 <EPS-BASIC> 1.55 <EPS-DILUTED> 1.39