1 EXHIBIT 11 COMPUTATION OF PER SHARE EARNINGS (in thousands, except earnings per share) October 3, September 27, September 28, 1999 1998 1997 - ---------------------------------------------------------------------------------------------- CALCULATION OF NET EARNINGS PER COMMON SHARE - BASIC Net earnings $101,693 $ 68,372 $ 55,211 - ---------------------------------------------------------------------------------------------- Weighted average common shares and common stock units outstanding 181,842 176,110 159,289 - ---------------------------------------------------------------------------------------------- Net earnings per common share - basic $ 0.56 $ 0.39 $ 0.35 - ---------------------------------------------------------------------------------------------- CALCULATION OF NET EARNINGS PER COMMON AND COMMON EQUIVALENT SHARE - DILUTED: (1) Net earnings calculation: Net earnings $101,693 $ 68,372 $ 55,211 Add after-tax interest expense on debentures -- 348 4,300 Add after-tax amortization of issuance costs related to the debentures -- 30 354 - ---------------------------------------------------------------------------------------------- Adjusted net earnings $101,693 $ 68,750 $ 59,865 - ---------------------------------------------------------------------------------------------- Weighted average shares outstanding calculation: Weighted average common shares and common stock units outstanding 181,842 176,110 159,289 Dilutive effect of outstanding common stock options 6,689 6,257 6,833 Assuming conversion of convertible subordinated debentures -- 1,404 14,195 - ---------------------------------------------------------------------------------------------- Weighted average common and common equivalent shares outstanding 188,531 183,771 180,317 - ---------------------------------------------------------------------------------------------- Net earnings per common and common equivalent share - diluted $ 0.54 $ 0.37 $ 0.33 - ---------------------------------------------------------------------------------------------- (1) Diluted earnings per share assumes conversion of the Company's formerly outstanding convertible subordinated debentures using the "if converted" method when such securities were dilutive, with income adjusted for the after-tax interest expense and amortization applicable to these debentures.