EXHIBIT 12 RATIO OF EARNINGS TO FIXED CHARGES Ratio of Earnings to Fixed Charges (Dollars in thousands) 1999 1998 1997 1996 1995 ---- ---- ---- ---- ---- Earnings: Pretax income $45,130 $32,779 $33,697 $45,939 $19,384 Interest 28,573 20,506 18,890 13,797 12,111 Interest in Leases 1,548 1,507 1,152 861 1,086 Amortization of Cap Interest 242 190 123 107 63 ------- ------- ------- ------- ------- $75,493 $54,982 $53,862 $60,704 $32,644 ======= ======= ======= ======= ======= Fixed charges: Interest $28,573 $20,506 $18,890 $13,797 $12,111 Capitalized interest 1,032 1,215 118 202 690 Interest in leases 1,548 1,507 1,152 861 1,086 Amortization of Cap Interest 242 190 123 107 63 ------- ------- ------- ------- ------- $31,395 $23,418 $20,283 $14,967 $13,950 ======= ======= ======= ======= ======= Ratio: 2.4x 2.3x 2.7x 4.1x 2.3x 67