EXHIBIT NO. 11(b) COMPUTATION FOR DILUTED EARNINGS PER SHARE FOR THE YEARS ENDED DECEMBER 31 (AMOUNTS IN MILLIONS EXCEPT FOR PER-SHARE DATA) 2001 2000 1999 ------ ------ ------ Diluted earnings per share - -------------------------- Net earnings $ 92.8 $ 12.2 $ 14.3 Average number of common shares outstanding 40.5 40.2 39.9 Average number of common shares issuable under stock options 0.3 0.3 0.3 ------ ------ ------ Average number of common and common stock equivalents outstanding 40.8 40.5 40.2 Diluted earnings per share $ 2.27 $ 0.30 $ 0.36