EX-12.1 4 exhibit12.htm EXHIBIT 12.1 exhibit12.htm
 

 
 
 
Computation of Ratios of Earnings to Fixed Charges
 
The following table sets forth certain information regarding our consolidated ratio of earnings to fixed charges for the five-year period ended December 31, 2008.
 
   
Year Ended December 31,
    
     
2004
    
2005
    
2006
    
2007
      
 2008
    
                                     
Ratio of earnings to fixed charges (a)
      
7.2
      
8.5
      
10.3
      
11.8
        4.7    
                                             
 
(a) 
These ratios were calculated by dividing the sum of fixed charges into the sum of earnings before taxes and fixed charges.  Fixed charges for these purposes consist of all interest expense and the approximate portion of rental expense representing interest.