Exhibit 12 COMPUTATIONS OF RATIOS OF EARNINGS TO FIXED CHARGES Three months ended December 31 (Dollars in thousands) 1996 1995 - -------------------------------------------------------------------------- Income before taxes $136,984 $107,175 Add fixed charges: Interest expense 12,168 7,365 Interest factor on rent 2,092 1,888 Total fixed charges 14,260 9,591 Earnings before fixed charges and taxes on income $151,244 $116,428 Ratio of earnings to fixed charges 10.6 12.6