EXHIBIT 12.1 Statement of Computation of Ratio of Earnings to Fixed Charges Actual Actual ------------------------------------------ --------- As Pro As Pro adjusted Forma adjusted forma 9 months 9 months 9 months (000's) 1995 1996 1997 1998 1999 1999 1999 6/30/00 6/30/00 6/30/00 - ------------------------------------------------------------------------------------------------------------------------------------ Earnings: Pretax Income 1,586 13,725 33,453 56,560 90,443 61,643 15,056 44,413 31,280 2,561 Fixed Charges: Interest expense on convertible subordinated debentures 28,800 28,800 8,467 21,600 21,600 *Interest in operating leases 215 251 247 409 490 490 490 241 241 242 Interest expense as recorded 1,304 772 161 76 187 187 197 396 396 406 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ Subtotal Earnings 3,105 14,748 33,861 57,045 91,120 91,120 44,543 53,517 53,517 24,809 Fixed Charges: Interest expense on convertible subordinated debentures 28,800 28,800 8,467 21,600 21,600 *Interest in operating leases 215 251 247 409 490 490 490 241 241 242 Interest expense as recorded 1,304 772 161 76 187 187 197 396 396 406 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------- 1,519 1,023 408 485 677 29,477 29,487 9,104 22,237 22,248 ------ ------ ------ ------ ------ ------ ------ ----- ------ ------- 2.04 14.42 82.99 117.62 134.59 3.09 1.51 5.88 2.41 1.12 ------ ------ ------ ------ ------ ------ ------ ----- ------ ------- * Approximately 10% of operating lease payments assumed to be interest costs.