| 
                 
                    Closing price on 5/29/2006
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    32.20 | 
                 
                
                    | High | 
                    32.80 | 
                 
                
                    | Low | 
                    29.50 | 
                     
                
                    | Volume | 
                    191,300 | 
                                 
                
                    | Split-adjusted Price | 
                    6.33 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/29/2006
             | 
            
                -2.90 / -8.84%
             |             
            
                32.20
             |           
            
                32.80
             |               
            
                29.50
             |                           
            
                29.90
             | 
            
                29.90
             |                     
            
                6.33
             |                                 
            
                191,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2006
             | 
            
                -1.00 / -2.96%
             |             
            
                33.40
             |           
            
                34.00
             |               
            
                32.30
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                6.95
             |                                 
            
                117,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2006
             | 
            
                -2.70 / -7.40%
             |             
            
                35.50
             |           
            
                36.10
             |               
            
                33.10
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                7.16
             |                                 
            
                179,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2006
             | 
            
                -0.10 / -0.27%
             |             
            
                36.20
             |           
            
                38.30
             |               
            
                35.80
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                7.73
             |                                 
            
                273,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2006
             | 
            
                +36.60 / +0.00%
             |             
            
                37.20
             |           
            
                38.30
             |               
            
                35.30
             |                           
            
                36.60
             | 
            
                36.60
             |                     
            
                7.75
             |                                 
            
                221,300
             |            
            
                 
             |                                       
         
    
         
    
    
 |