EXHIBIT 11 COMPUTATION OF PER SHARE EARNINGS (Treasury Stock Method) Year Ended September 30 -------------------------------------------- 1997 1996 1995 -------- -------- -------- Average Shares: Outstanding 175,950 175,519 174,225 Effect of stock options 5,332 4,086 --- -------- -------- -------- Average common and common 181,282 179,605 174,225 equivalent shares outstanding -------- -------- -------- Net Income $513,380 $236,181 $337,648 -------- -------- -------- Primary earnings per common and common 2.83 1.32 1.94 equivalent share -------- -------- --------