1 PART IV Item 14 -- Exhibit 11 -- Computation of Per Share Earnings 1997 1996 1995 ----------- ----------- ----------- BASIC: Net income............................................ $65,503,469 $64,006,073 $53,537,199 Preferred dividend requirement........................ 23,257,662 19,842,834 18,129,144 ----------- ----------- ----------- Net income available for common....................... $42,245,807 $44,163,239 $35,408,055 =========== =========== =========== Average common shares outstanding..................... 38,460,687 35,918,565 33,367,527 Basic earnings per share.............................. $ 1.10 $ 1.23 $ 1.06 =========== =========== =========== DILUTED: Net income............................................ $65,503,469 $64,006,073 $53,537,199 Preferred dividend requirement........................ 22,779,499 18,944,799 18,129,144 ----------- ----------- ----------- Net income available for common....................... $42,723,970 $45,061,274 $35,408,055 =========== =========== =========== Dilutive convertible preferred shares................. 366,136 687,638 0 Dilutive stock options................................ 101,300 70,100 50,200 Average common shares outstanding..................... 38,460,687 35,918,565 33,367,527 ----------- ----------- ----------- Average diluted common shares outstanding............. 38,928,123 36,676,303 33,417,727 =========== =========== =========== Diluted earnings per share............................ $ 1.10 $ 1.23 $ 1.06 =========== =========== ===========