45 EXHIBIT 12.1 Statement Regarding Computation of Ratios 46 Computation of Ratios - --------------------------------- The following formulas were used to calculate the ratios in Financial Information and Supplementary Data, page 47, Selected Financial Data for the years ended December 31, 1998, 1997, 1996, 1995 and 1994, included in this report. (Calculation) Net Income / Weighted average shares of common stock outstanding for the period = Earnings Per Share December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Net Income $ 2,033,025 $ 1,930,568 $ 1,643,994 $ 1,470,347 $ 1,287,713 Weighted Average Shares Outstanding 1,257,252 1,257,252 1,257,252 1,257,252 1,257,154 Per Share Amount $1.62 $1.54 $1.31 $1.17 $1.02 (Calculation) Cash dividends/ Shares issued = Cash dividends declared per share December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Cash dividends $ 732,677 $ 652,936 $ 573,698 $ 410,525 $ 448,535 Shares issued 1,257,252 1,257,252 1,257,252 1,257,252 1,257,154 Per Share Amount $.58 $.52 $.46 $.33 $.36 (Calculation) Stockholders' Equity/ Shares issued = Book Value per share December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Stockholders' Equity $15,460,938 $14,128,995 $12,649,278 $11,709,207 $10,367,843 Shares issued 1,257,252 1,257,252 1,257,252 1,257,252 1,257,154 Per Share Amount $12.30 $11.24 $10.06 $ 9.31 $ 8.25 47 (Calculation) Net Income / Total average assets = Return on Average Assets (In thousands) December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Net Income $ 2,033 $ 1,931 $ 1,644 $ 1,470 $ 1,288 Total Average Assets $ 164,630 $ 153,290 $ 137,810 $ 124,145 $ 117,996 Return on Average Assets 1.23% 1.26% 1.19% 1.18% 1.09% (Calculation) Net Income / Average stockholders' equity = Return on Average Equity (In thousands) December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Net Income $ 2,033 $ 1,931 $ 1,644 $ 1,470 $ 1,288 Total Average Stockholders' Equity $ 14,697 $ 13,400 $ 12,186 $ 11,170 $ 10,253 Return on Average Equity 13.83% 14.41% 13.49% 13.16% 12.56% (Calculation) Average Equity / Average stockholders' equity = Average Equity to Average Assets (In thousands) December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Total Average Stockholders' Equity $ 14,697 $ 13,400 $ 12,186 $ 11,170 $ 10,253 Total Average Assets $ 164,630 $ 153,290 $ 137,810 $ 124,145 $ 117,996 Average Equity to Average Assets 8.93% 8.74% 8.84% 9.00% 8.69% 48 (Calculation) Cash dividends per share / Net income per share = Dividend Payout Ratio December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Cash dividends per share $ .58 $ .52 $ .46 $ .33 $ .36 Net income per share $ 1.62 $ 1.54 $ 1.31 $ 1.17 $ 1.02 Dividend Payout Ratio 35.80% 33.77% 35.11% 28.21% 35.29% (Calculation) Loans/ Total deposits = Loan to Deposit Ratio December 31, 1998 1997 1996 1995 1994 ------ ------ ------ ------ ------ Loans $103,555,319 $95,373,653 $80,416,680 $72,006,276 $61,667,148 Total deposits $147,784,819 $137,044,813 $125,271,069 $114,895,154 $105,730,236 Loan to Deposit Ratio 70.07% 69.59% 64.19% 62.67% 58.32%