| 
                 
                    Closing price on 2/20/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.00 | 
                 
                
                    | High | 
                    11.00 | 
                 
                
                    | Low | 
                    10.60 | 
                     
                
                    | Volume | 
                    38,020 | 
                                 
                
                    | Split-adjusted Price | 
                    2.45 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PET Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/20/2009
             | 
            
                0.00 / 0.00%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.60
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                2.45
             |                                 
            
                38,020
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2009
             | 
            
                0.00 / 0.00%
             |             
            
                11.10
             |           
            
                11.30
             |               
            
                10.50
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                2.45
             |                                 
            
                73,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2009
             | 
            
                -0.50 / -4.39%
             |             
            
                10.90
             |           
            
                11.00
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                2.45
             |                                 
            
                175,960
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2009
             | 
            
                -0.60 / -5.00%
             |             
            
                11.80
             |           
            
                11.90
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                2.56
             |                                 
            
                128,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2009
             | 
            
                -0.30 / -2.44%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                2.70
             |                                 
            
                32,650
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2009
             | 
            
                +0.30 / +2.50%
             |             
            
                12.00
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.77
             |                                 
            
                97,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2009
             | 
            
                -0.30 / -2.44%
             |             
            
                12.20
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                2.70
             |                                 
            
                125,640
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2009
             | 
            
                -0.30 / -2.38%
             |             
            
                12.30
             |           
            
                12.40
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.77
             |                                 
            
                25,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2009
             | 
            
                -0.50 / -3.82%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                2.83
             |                                 
            
                42,840
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2009
             | 
            
                +0.60 / +4.80%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                2.94
             |                                 
            
                57,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2009
             | 
            
                +0.20 / +1.63%
             |             
            
                12.30
             |           
            
                12.50
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                2.81
             |                                 
            
                57,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2009
             | 
            
                -0.60 / -4.65%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.77
             |                                 
            
                87,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/4/2009
             | 
            
                -0.10 / -0.77%
             |             
            
                12.80
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                2.90
             |                                 
            
                44,190
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2009
             | 
            
                -0.40 / -2.99%
             |             
            
                13.10
             |           
            
                13.30
             |               
            
                12.90
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                2.92
             |                                 
            
                64,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2009
             | 
            
                -0.40 / -2.90%
             |             
            
                13.50
             |           
            
                13.60
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                3.01
             |                                 
            
                33,030
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2009
             | 
            
                +0.10 / +0.73%
             |             
            
                13.70
             |           
            
                14.00
             |               
            
                13.70
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                3.10
             |                                 
            
                41,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2009
             | 
            
                +0.20 / +1.48%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.60
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                3.08
             |                                 
            
                37,410
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2009
             | 
            
                -0.20 / -1.46%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                3.03
             |                                 
            
                45,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2009
             | 
            
                -0.10 / -0.72%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.60
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                3.08
             |                                 
            
                34,370
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2009
             | 
            
                -0.10 / -0.72%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                3.10
             |                                 
            
                43,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2009
             | 
            
                +0.10 / +0.72%
             |             
            
                13.80
             |           
            
                14.00
             |               
            
                13.80
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                3.12
             |                                 
            
                52,210
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2009
             | 
            
                -0.20 / -1.43%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                3.10
             |                                 
            
                33,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2009
             | 
            
                +0.10 / +0.72%
             |             
            
                13.90
             |           
            
                14.10
             |               
            
                13.90
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                3.15
             |                                 
            
                51,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2009
             | 
            
                -0.20 / -1.42%
             |             
            
                14.00
             |           
            
                14.20
             |               
            
                13.80
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                3.12
             |                                 
            
                80,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2009
             | 
            
                -0.20 / -1.40%
             |             
            
                14.10
             |           
            
                14.30
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                3.17
             |                                 
            
                36,230
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2009
             | 
            
                -0.10 / -0.69%
             |             
            
                14.40
             |           
            
                14.50
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                18,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2009
             | 
            
                -0.40 / -2.70%
             |             
            
                14.60
             |           
            
                14.70
             |               
            
                14.40
             |                           
            
                14.40
             | 
            
                14.40
             |                     
            
                3.24
             |                                 
            
                33,080
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2009
             | 
            
                +0.30 / +2.07%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.60
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                3.33
             |                                 
            
                104,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2009
             | 
            
                +0.20 / +1.40%
             |             
            
                14.30
             |           
            
                14.60
             |               
            
                14.30
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.26
             |                                 
            
                79,210
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2009
             | 
            
                0.00 / 0.00%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.00
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                25,160
             |  
            
                 
             |                                                              
             
    
         
    
    
 |