EXHIBIT 12.1 Statement Regarding Computation of Ratios Computation of Ratios The following formulas were used to calculate the ratios in Financial Information and Supplementary Data, page 44, Selected Financial Data for the years ended December 31, 2002, 2001, 2000, 1999 and 1998, included in this report. (Calculation) Net Income / Weighted average shares of common stock outstanding for the period = Earnings Per Share December 31, ---------------------------------------------------------------- 2002 2001 2000 1999 1998 ---------- ---------- ---------- ---------- ---------- Net Income $2,673,817 $2,412,403 $2,325,906 $2,450,381 $2,033,025 Weighted Average Shares Outstanding 1,538,443 1,538,443 1,538,443 1,538,443 1,538,443 Per Share Amount $ 1.74 $ 1.57 $ 1.51 $ 1.59 $ 1.32 (Calculation) Cash dividends/ Shares issued = Cash dividends declared per share December 31, ---------------------------------------------------------------- 2002 2001 2000 1999 1998 ---------- ---------- ------------ ---------- ---------- Cash dividends $1,061,526 $1,046,041 $ 980,542 $ 827,247 $ 732,677 Shares issued 1,538,443 1,538,443 1,538,443 1,538,443 1,538,443 Per Share Amount $ .69 $ .68 $ .64 $ .54 $ .48 (Calculation) Stockholders' Equity/ Shares issued = Book Value per share December 31, -------------------------------------------------------------------- 2002 2001 2000 1999 1998 ----------- ----------- ----------- ----------- ----------- Stockholders' Equity $22,459,633 $20,248,968 $18,225,100 $16,055,472 $15,460,938 Shares issued 1,538,443 1,538,443 1,538,443 1,538,443 1,538,443 Per Share Amount $ 14.60 $ 13.16 $ 11.85 $ 10.44 $ 10.05 (Calculation) Net Income / Total average assets = Return on Average Assets (In thousands) December 31, ---------------------------------------------------- 2002 2001 2000 1999 1998 -------- -------- -------- -------- -------- Net Income $ 2,674 $ 2,412 $ 2,326 $ 2,450 $ 2,033 Total Average Assets $252,543 $217,006 $203,529 $183,436 $164,630 Return on Average Assets 1.06% 1.11% 1.14% 1.34% 1.23% (Calculation) Net Income / Average stockholders' equity = Return on Average Equity (In thousands) December 31, ----------------------------------------------- 2002 2001 2000 1999 1998 ------- ------- ------- ------- ------- Net Income $ 2,674 $ 2,412 $ 2,326 $ 2,450 $ 2,033 Total Average Stockholders' Equity $20,302 $18,902 $17,448 $16,087 $14,697 Return on Average Equity 13.17% 12.76% 13.33% 15.23% 13.83% (Calculation) Average Equity / Average stockholders' equity = Average Equity to Average Assets (In thousands) December 31, ---------------------------------------------------------- 2002 2001 2000 1999 1998 -------- -------- -------------- -------- -------- Total Average Stockholders' Equity $ 20,302 $ 18,902 $ 17,448 $ 16,087 $ 14,697 Total Average Assets $252,543 $217,006 $203,529 $183,436 $164,630 Average Equity to Average Assets 8.04% 8.71% 8.57% 8.77% 8.93% (Calculation) Cash dividends per share / Net income per share = Dividend Payout Ratio December 31, ----------------------------------------- 2002 2001 2000 1999 1998 ------ ----- ------ ------ ------ Cash dividends per share $ .69 $ .68 $ .64 $ .54 $ .48 Net income per share $ 1.74 $1.57 $ 1.51 $ 1.59 $ 1.32 Dividend Payout Ratio 39.66% 43.31% 42.38% 33.96% 36.36% (Calculation) Loans/ Total deposits = Loan to Deposit Ratio December 31, ------------------------------------------------------------------------ 2002 2001 2000 1999 1998 ------------ ------------ ------------ ------------ ------------ Loans $136,771,760 $120,943,839 $114,053,003 $110,488,432 $103,555,319 Total deposits $231,375,582 $203,771,954 $173,668,578 $161,557,932 $147,784,819 Loan to Deposit Ratio 59.11% 59.35% 65.67% 68.39% 70.07%