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Exhibit 12
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
($'s in 000's)
YEARS ENDED DECEMBER 31
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2005 2004 2003 2002 2001
-------- -------- -------- -------- --------
FIXED CHARGES:
Interest charges $ 13,737 $ 14,184 $ 13,511 $ 15,774 $ 20,374
Net amortization of debt discount and
premium and issuance expense 686 580 580 580 364
Interest portion of rental charges 574 552 559 484 455
-------- -------- -------- -------- --------
TOTAL FIXED CHARGES $ 14,997 $ 15,316 $ 14,650 $ 16,838 $ 21,193
======== ======== ======== ======== ========
EARNINGS:
Pre-tax earnings $168,928 $133,877 $ 96,670 $ 83,895 $ 53,431
Interest charges 13,737 14,184 13,511 15,774 20,374
Net amortization of debt discount and
premium and issuance expense 686 580 580 580 364
Interest portion of rental charges 574 552 559 484 455
-------- -------- -------- -------- --------
TOTAL EARNINGS $183,925 $149,193 $111,320 $100,733 $ 74,624
======== ======== ======== ======== ========
RATIO OF EARNINGS TO FIXED CHARGES 12.3 9.7 7.6 6.0 3.5