Exhibit 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Year Ended December 31 1993 1992 1991 1990 1989 Computation of Earnings: Income from continuing operations $11,079,360 $10,129,692 $ 4,516,046 $ 5,259,776 $ 1,661,908 Add: Interest expense on indebtedness 6,168,371 6,325,440 7,297,735 7,908,705 8,741,759 Interest portion of rent expense 2,410,135 2,332,736 2,210,995 2,288,081 1,907,116 Earnings (income from continuing operations as adjusted) $19,657,866 $18,787,868 $14,024,776 $15,456,562 $12,310,783 Computation of Fixed Charges (from continuing operations): Interest expense on indebtedness $ 6,168,371 $ 6,325,440 $ 7,297,735 $ 7,908,705 $ 8,741,759 Interest portion of rent expense 2,410,135 2,332,736 2,210,995 2,288,081 1,907,116 Fixed charges $ 8,578,506 $ 8,658,176 $ 9,508,730 $10,196,786 $10,648,875 Ratio of earnings to fixed charges 2.29 2.17 1.47 1.52 1.16 <FN> For the purpose of calculating the ratio of earnings to fixed charges, "earnings (income as adjusted)" consist of income from continuing operations after adding certain fixed charges as noted above. "Fixed charges" consist of interest expense, one-third of rental expense representative of the interest factor and capitalized interest.