Exhibit 12 Computation of Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends (Dollars in thousands) Three months ended March 31, 2001 2000 ---- ---- Net income before extraordinary item $ 5,919 $18,808 Add: Portion of rents representative of the interest factor 198 244 Minority interests 760 845 Loss on equity investment in joint venture (219) - Interest on indebtedness 37,221 39,075 ------ ------ Earnings $43,880 $58,972 ======= ======= Fixed charges and preferred stock dividend: Interest on indebtedness $37,221 $39,075 Capitalized interest 768 964 Portion of rents representative of the interest factor 198 244 ------ ------ Fixed charges 38,187 40,283 ------ ------ Add: Preferred stock dividend 9,063 9,408 ------ ------ Combined fixed charges and preferred stock dividend $47,250 $49,691 ======= ======= Ratio of earnings to fixed charges 1.15 x 1.46 x Ratio of earnings to combined fixed charges and preferred stock dividend 0.93 1.19