| 
                 
                    Closing price on 12/11/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    59.00 | 
                 
                
                    | High | 
                    59.50 | 
                 
                
                    | Low | 
                    59.00 | 
                     
                
                    | Volume | 
                    182,840 | 
                                 
                
                    | Split-adjusted Price | 
                    14.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/11/2007
             | 
            
                +0.50 / +0.85%
             |             
            
                59.00
             |           
            
                59.50
             |               
            
                59.00
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                182,840
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2007
             | 
            
                -1.00 / -1.67%
             |             
            
                59.00
             |           
            
                60.00
             |               
            
                59.00
             |                           
            
                59.00
             | 
            
                59.00
             |                     
            
                14.07
             |                                 
            
                102,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2007
             | 
            
                +0.50 / +0.84%
             |             
            
                58.50
             |           
            
                60.00
             |               
            
                58.50
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                14.30
             |                                 
            
                77,450
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2007
             | 
            
                0.00 / 0.00%
             |             
            
                59.50
             |           
            
                60.00
             |               
            
                59.00
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                121,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2007
             | 
            
                0.00 / 0.00%
             |             
            
                59.50
             |           
            
                60.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                88,570
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2007
             | 
            
                -0.50 / -0.83%
             |             
            
                59.00
             |           
            
                60.00
             |               
            
                59.00
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                76,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2007
             | 
            
                +2.50 / +4.35%
             |             
            
                59.50
             |           
            
                60.00
             |               
            
                59.00
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                14.30
             |                                 
            
                141,070
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2007
             | 
            
                -2.00 / -3.36%
             |             
            
                59.00
             |           
            
                59.50
             |               
            
                57.50
             |                           
            
                57.50
             | 
            
                57.50
             |                     
            
                13.71
             |                                 
            
                304,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2007
             | 
            
                0.00 / 0.00%
             |             
            
                59.50
             |           
            
                60.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                33,510
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2007
             | 
            
                -1.00 / -1.65%
             |             
            
                60.00
             |           
            
                60.50
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                14.19
             |                                 
            
                103,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2007
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                14.42
             |                                 
            
                92,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2007
             | 
            
                0.00 / 0.00%
             |             
            
                60.50
             |           
            
                61.00
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                14.42
             |                                 
            
                69,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2007
             | 
            
                -1.00 / -1.63%
             |             
            
                62.00
             |           
            
                62.00
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                14.42
             |                                 
            
                268,940
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2007
             | 
            
                0.00 / 0.00%
             |             
            
                62.00
             |           
            
                62.00
             |               
            
                60.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                14.66
             |                                 
            
                134,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2007
             | 
            
                -0.50 / -0.81%
             |             
            
                60.50
             |           
            
                62.00
             |               
            
                60.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                14.66
             |                                 
            
                231,150
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2007
             | 
            
                -1.00 / -1.59%
             |             
            
                60.50
             |           
            
                62.50
             |               
            
                60.50
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                14.78
             |                                 
            
                406,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2007
             | 
            
                +2.50 / +4.13%
             |             
            
                63.00
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                63.00
             | 
            
                63.00
             |                     
            
                15.02
             |                                 
            
                580,250
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2007
             | 
            
                +2.00 / +3.42%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                14.42
             |                                 
            
                415,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2007
             | 
            
                +2.50 / +4.46%
             |             
            
                58.50
             |           
            
                58.50
             |               
            
                58.00
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                13.95
             |                                 
            
                363,210
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2007
             | 
            
                -2.50 / -4.27%
             |             
            
                58.50
             |           
            
                61.00
             |               
            
                56.00
             |                           
            
                56.00
             | 
            
                56.00
             |                     
            
                13.35
             |                                 
            
                754,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2007
             | 
            
                -3.00 / -4.88%
             |             
            
                61.50
             |           
            
                61.50
             |               
            
                58.50
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                13.95
             |                                 
            
                268,360
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2007
             | 
            
                0.00 / 0.00%
             |             
            
                60.00
             |           
            
                62.00
             |               
            
                60.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                14.66
             |                                 
            
                331,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2007
             | 
            
                -0.50 / -0.81%
             |             
            
                60.00
             |           
            
                62.00
             |               
            
                60.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                14.66
             |                                 
            
                189,470
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2007
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                62.00
             |               
            
                61.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                14.78
             |                                 
            
                170,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2007
             | 
            
                +1.50 / +2.48%
             |             
            
                61.00
             |           
            
                62.00
             |               
            
                61.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                14.78
             |                                 
            
                228,510
             |            
            
                 
             |                                       
         
    
        
            | 
                11/6/2007
             | 
            
                -0.50 / -0.82%
             |             
            
                61.00
             |           
            
                61.50
             |               
            
                60.00
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                14.42
             |                                 
            
                216,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/5/2007
             | 
            
                -1.00 / -1.61%
             |             
            
                61.50
             |           
            
                61.50
             |               
            
                61.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                14.54
             |                                 
            
                243,470
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2007
             | 
            
                -0.50 / -0.80%
             |             
            
                62.00
             |           
            
                62.00
             |               
            
                61.50
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                14.78
             |                                 
            
                115,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/1/2007
             | 
            
                -0.50 / -0.79%
             |             
            
                62.50
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                62.50
             | 
            
                62.50
             |                     
            
                14.90
             |                                 
            
                182,020
             |            
            
                 
             |                                       
         
    
        
            | 
                10/31/2007
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                63.00
             |               
            
                61.00
             |                           
            
                63.00
             | 
            
                63.00
             |                     
            
                15.02
             |                                 
            
                173,240
             |  
            
                 
             |                                                              
             
    
         
    
    
 |