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EXHIBIT 12
EARNINGS TO FIXED CHARGES CALCULATION
<Table>
<Caption>
YEAR
ENDED NINE MONTHS
DECEMBER ENDED FOR THE YEAR ENDED FOR THE SIX MONTHS ENDED
1998 9/30/98 9/30/99 9/30/00 9/30/01 9/30/02 9/30/03 3/31/03 3/31/04
-------- ------- ------- ------- ------- ------- ------- ------- -------
(dollars in millions)
Income from continuing operations $ 3,970 $ 3,981 $ 1,637 $(4,101) $(30,880) $27,553 $20,553 $18,430 $20,069
add back minority interests 68 54 (140) 74 441 1,042 1,828 699 2,024
add back income taxes -- -- -- 2,219 -- -- -- -- 985
add back fixed charges less cap int 20,448 15,946 9,734 75,321 79,605 70,829 69,347 36,956 35,383
------- ------- ------- ------- -------- ------- ------- ------- -------
total $24,486 $19,981 $11,231 $73,513 $ 49,166 $99,424 $91,728 $56,085 $58,461
------- ------- ------- ------- -------- ------- ------- ------- -------
Interest expenses $17,088 $13,426 $ 7,304 $62,352 $ 64,346 $55,317 $53,881 $26,448 $27,769
Interest charged to construction -- -- -- -- 96 799 1,300 225 995
rent expense equivalent to interest exp 3,360 2,520 2,430 9,540 11,668 11,165 11,741 4,656 5,837
amortization of financing costs -- -- -- 3,429 3,591 4,347 3,725 5,852 1,776
------- ------- ------- ------- -------- ------- ------- ------- -------
total fixed charges $20,448 $15,946 $ 9,734 $75,321 $ 79,701 $71,628 $70,647 $37,181 $36,377
------- ------- ------- ------- -------- ------- ------- ------- -------
------- ------- ------- ------- -------- ------- ------- ------- -------
Ratio 1.20 1.25 1.15 0.98 0.62 1.39 1.30 1.51 1.61
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</Table>