Exhibit 11 COMPUTATIONS OF PER SHARE EARNINGS Earnings per share are based on net income divided by the average number of shares outstanding including common stock equivalents during the period. Three months Six months ended ended March 31 March 31 (Dollars and shares in thousands) 1996 1995 1996 1995 ----------- ---------- -------- ------- Average outstanding shares 80,345 81,375 80,584 81,489 Common stock equivalents Primary 2,573 1,335 2,536 1,335 Fully diluted 2,721 1,502 2,721 1,502 Total shares Primary 82,918 82,710 83,120 82,824 Fully diluted 83,065 82,878 83,305 82,991 Net income $75,212 $63,040 $149,163 $126,344 Earnings per share: Primary $0.91 $0.76 $1.79 $1.52 Fully diluted $0.91 $0.76 $1.79 $1.52