EX-12 3 a2128049zex-12.htm EX-12
QuickLinks -- Click here to rapidly navigate through this document

Exhibit 12


RATIO OF EARNINGS TO FIXED CHARGES

 
  Year Ended September 30,
 
  1999
  2000
  2001
  2002
  2003
Earnings:                              
Income before income taxes   $ 32,081   $ 43,449   $ 61,727   $ 64,403   $ 83,065
Interest expense     7,871     11,785     11,065     4,569     4,867
Interest portion of rent expense     9,133     9,967     10,600     10,167     10,300
Amortization of debt issuance costs     144     89     85     135     143
   
 
 
 
 
    $ 49,229   $ 65,290   $ 83,477   $ 79,274   $ 98,375
   
 
 
 
 
Fixed Charges:                              
Interest expense   $ 7,871   $ 11,785   $ 11,065   $ 4,569   $ 4,867
Interest portion of rent expense     9,133     9,967     10,600     10,167     10,300
Capitalized interest     1,556     1,574     1,203     487     242
Amortization of debt issuance costs     144     89     85     135     143
   
 
 
 
 
    $ 18,704   $ 23,415   $ 22,953   $ 15,358   $ 15,552
   
 
 
 
 
Ratio of earnings to fixed charges(1)     2.6     2.8     3.6     5.2     6.3
   
 
 
 
 

(1)
For the purpose of calculating the ratio of earnings to fixed charges, "earnings" consist of income before income taxes plus "fixed charges" and certain other adjustments. "Fixed charges" consist of interest incurred on all indebtedness, amortization of debt issuance costs, and the portion of rent expense deemed representative of the interest factor.



QuickLinks

RATIO OF EARNINGS TO FIXED CHARGES