| 
                 
                    Closing price on 11/10/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.60 | 
                 
                
                    | High | 
                    15.60 | 
                 
                
                    | Low | 
                    15.40 | 
                     
                
                    | Volume | 
                    207,500 | 
                                 
                
                    | Split-adjusted Price | 
                    5.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/10/2011
             | 
            
                -0.20 / -1.28%
             |             
            
                15.60
             |           
            
                15.60
             |               
            
                15.40
             |                           
            
                15.40
             | 
            
                15.47
             |                     
            
                5.60
             |                                 
            
                207,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2011
             | 
            
                -0.20 / -1.27%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                15.74
             |                     
            
                5.67
             |                                 
            
                140,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.70
             |           
            
                16.00
             |               
            
                15.50
             |                           
            
                15.80
             | 
            
                15.72
             |                     
            
                5.74
             |                                 
            
                121,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2011
             | 
            
                -0.10 / -0.63%
             |             
            
                15.90
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                15.80
             | 
            
                15.73
             |                     
            
                5.74
             |                                 
            
                130,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2011
             | 
            
                +0.10 / +0.63%
             |             
            
                16.00
             |           
            
                16.30
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                15.96
             |                     
            
                5.78
             |                                 
            
                177,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2011
             | 
            
                -0.10 / -0.63%
             |             
            
                15.80
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                15.80
             | 
            
                15.81
             |                     
            
                5.74
             |                                 
            
                248,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2011
             | 
            
                -0.40 / -2.45%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                15.60
             |                           
            
                15.90
             | 
            
                15.82
             |                     
            
                5.78
             |                                 
            
                255,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2011
             | 
            
                -0.60 / -3.55%
             |             
            
                16.70
             |           
            
                16.70
             |               
            
                16.20
             |                           
            
                16.30
             | 
            
                16.47
             |                     
            
                5.93
             |                                 
            
                296,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2011
             | 
            
                +0.30 / +1.81%
             |             
            
                17.20
             |           
            
                17.50
             |               
            
                16.50
             |                           
            
                16.90
             | 
            
                17.00
             |                     
            
                6.14
             |                                 
            
                723,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2011
             | 
            
                +1.00 / +6.41%
             |             
            
                16.50
             |           
            
                16.60
             |               
            
                16.10
             |                           
            
                16.60
             | 
            
                16.46
             |                     
            
                6.04
             |                                 
            
                468,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2011
             | 
            
                -0.10 / -0.64%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                15.63
             |                     
            
                5.67
             |                                 
            
                84,200
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2011
             | 
            
                +0.10 / +0.64%
             |             
            
                15.50
             |           
            
                15.70
             |               
            
                15.50
             |                           
            
                15.70
             | 
            
                15.59
             |                     
            
                5.71
             |                                 
            
                75,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2011
             | 
            
                -0.20 / -1.27%
             |             
            
                15.60
             |           
            
                15.80
             |               
            
                15.50
             |                           
            
                15.60
             | 
            
                15.64
             |                     
            
                5.67
             |                                 
            
                81,700
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2011
             | 
            
                -0.20 / -1.25%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.97
             |                     
            
                5.74
             |                                 
            
                118,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/21/2011
             | 
            
                +0.50 / +3.23%
             |             
            
                15.60
             |           
            
                16.20
             |               
            
                15.60
             |                           
            
                16.00
             | 
            
                15.94
             |                     
            
                5.82
             |                                 
            
                271,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2011
             | 
            
                -0.10 / -0.64%
             |             
            
                15.60
             |           
            
                15.70
             |               
            
                15.40
             |                           
            
                15.50
             | 
            
                15.61
             |                     
            
                5.64
             |                                 
            
                150,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2011
             | 
            
                +0.20 / +1.30%
             |             
            
                15.60
             |           
            
                15.80
             |               
            
                15.50
             |                           
            
                15.60
             | 
            
                15.59
             |                     
            
                5.67
             |                                 
            
                149,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2011
             | 
            
                +0.10 / +0.65%
             |             
            
                15.60
             |           
            
                15.80
             |               
            
                15.20
             |                           
            
                15.40
             | 
            
                15.46
             |                     
            
                5.60
             |                                 
            
                235,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/17/2011
             | 
            
                -0.30 / -1.92%
             |             
            
                15.80
             |           
            
                16.10
             |               
            
                15.30
             |                           
            
                15.30
             | 
            
                15.38
             |                     
            
                5.56
             |                                 
            
                161,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2011
             | 
            
                +0.20 / +1.30%
             |             
            
                15.50
             |           
            
                15.90
             |               
            
                15.50
             |                           
            
                15.60
             | 
            
                15.67
             |                     
            
                5.67
             |                                 
            
                99,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.50
             |           
            
                15.80
             |               
            
                15.20
             |                           
            
                15.40
             | 
            
                15.50
             |                     
            
                5.60
             |                                 
            
                142,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2011
             | 
            
                -0.50 / -3.14%
             |             
            
                15.70
             |           
            
                15.90
             |               
            
                15.20
             |                           
            
                15.40
             | 
            
                15.46
             |                     
            
                5.60
             |                                 
            
                423,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/11/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                16.40
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                15.99
             |                     
            
                5.78
             |                                 
            
                144,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/10/2011
             | 
            
                -0.30 / -1.85%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                16.02
             |                     
            
                5.78
             |                                 
            
                154,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/7/2011
             | 
            
                -0.60 / -3.57%
             |             
            
                16.70
             |           
            
                16.80
             |               
            
                16.20
             |                           
            
                16.20
             | 
            
                16.46
             |                     
            
                5.89
             |                                 
            
                238,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2011
             | 
            
                +0.60 / +3.70%
             |             
            
                16.40
             |           
            
                16.90
             |               
            
                16.20
             |                           
            
                16.80
             | 
            
                16.63
             |                     
            
                6.11
             |                                 
            
                239,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2011
             | 
            
                +0.10 / +0.62%
             |             
            
                16.40
             |           
            
                16.50
             |               
            
                16.00
             |                           
            
                16.20
             | 
            
                16.17
             |                     
            
                5.89
             |                                 
            
                156,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/4/2011
             | 
            
                +0.20 / +1.26%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.70
             |                           
            
                16.10
             | 
            
                15.94
             |                     
            
                5.85
             |                                 
            
                226,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/3/2011
             | 
            
                -0.40 / -2.45%
             |             
            
                16.50
             |           
            
                16.60
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                16.08
             |                     
            
                5.78
             |                                 
            
                239,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2011
             | 
            
                -0.30 / -1.81%
             |             
            
                16.60
             |           
            
                16.80
             |               
            
                16.20
             |                           
            
                16.30
             | 
            
                16.46
             |                     
            
                5.93
             |                                 
            
                326,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |