| 
                 
                    Closing price on 1/31/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.00 | 
                 
                
                    | High | 
                    13.60 | 
                 
                
                    | Low | 
                    13.00 | 
                     
                
                    | Volume | 
                    315,500 | 
                                 
                
                    | Split-adjusted Price | 
                    4.84 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/31/2012
             | 
            
                +0.40 / +3.10%
             |             
            
                13.00
             |           
            
                13.60
             |               
            
                13.00
             |                           
            
                13.30
             | 
            
                13.39
             |                     
            
                4.84
             |                                 
            
                315,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2012
             | 
            
                +0.20 / +1.57%
             |             
            
                12.50
             |           
            
                13.10
             |               
            
                12.40
             |                           
            
                12.90
             | 
            
                12.82
             |                     
            
                4.69
             |                                 
            
                113,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2012
             | 
            
                -0.20 / -1.55%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.60
             |                           
            
                12.70
             | 
            
                12.79
             |                     
            
                4.62
             |                                 
            
                199,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2012
             | 
            
                +0.70 / +5.74%
             |             
            
                12.30
             |           
            
                13.00
             |               
            
                12.30
             |                           
            
                12.90
             | 
            
                12.76
             |                     
            
                4.69
             |                                 
            
                196,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2012
             | 
            
                +0.20 / +1.67%
             |             
            
                12.00
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.16
             |                     
            
                4.44
             |                                 
            
                78,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2012
             | 
            
                -0.30 / -2.44%
             |             
            
                12.00
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.17
             |                     
            
                4.36
             |                                 
            
                184,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2012
             | 
            
                +0.30 / +2.50%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.10
             |                           
            
                12.30
             | 
            
                12.35
             |                     
            
                4.47
             |                                 
            
                169,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2012
             | 
            
                +0.20 / +1.69%
             |             
            
                11.70
             |           
            
                12.10
             |               
            
                11.70
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                4.36
             |                                 
            
                137,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2012
             | 
            
                +0.20 / +1.72%
             |             
            
                11.80
             |           
            
                12.30
             |               
            
                11.70
             |                           
            
                11.80
             | 
            
                11.90
             |                     
            
                4.29
             |                                 
            
                132,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2012
             | 
            
                -0.30 / -2.52%
             |             
            
                11.90
             |           
            
                12.10
             |               
            
                11.50
             |                           
            
                11.60
             | 
            
                11.80
             |                     
            
                4.22
             |                                 
            
                142,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2012
             | 
            
                +0.30 / +2.59%
             |             
            
                11.50
             |           
            
                12.00
             |               
            
                11.50
             |                           
            
                11.90
             | 
            
                11.81
             |                     
            
                4.33
             |                                 
            
                158,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2012
             | 
            
                +0.20 / +1.75%
             |             
            
                11.30
             |           
            
                11.90
             |               
            
                11.30
             |                           
            
                11.60
             | 
            
                11.46
             |                     
            
                4.22
             |                                 
            
                117,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2012
             | 
            
                +0.10 / +0.88%
             |             
            
                11.20
             |           
            
                11.40
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.29
             |                     
            
                4.14
             |                                 
            
                161,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2012
             | 
            
                -0.40 / -3.42%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.51
             |                     
            
                4.11
             |                                 
            
                151,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2012
             | 
            
                -0.40 / -3.31%
             |             
            
                11.60
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.70
             | 
            
                11.74
             |                     
            
                4.25
             |                                 
            
                192,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2012
             | 
            
                +0.10 / +0.83%
             |             
            
                12.40
             |           
            
                12.80
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.41
             |                     
            
                4.40
             |                                 
            
                155,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2011
             | 
            
                +0.60 / +5.26%
             |             
            
                11.60
             |           
            
                12.30
             |               
            
                11.60
             |                           
            
                12.00
             | 
            
                12.01
             |                     
            
                4.36
             |                                 
            
                233,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2011
             | 
            
                +0.10 / +0.88%
             |             
            
                11.40
             |           
            
                12.00
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.55
             |                     
            
                4.14
             |                                 
            
                181,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2011
             | 
            
                +0.50 / +4.63%
             |             
            
                11.10
             |           
            
                11.50
             |               
            
                11.00
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                4.11
             |                                 
            
                169,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2011
             | 
            
                -0.20 / -1.82%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.60
             |                           
            
                10.80
             | 
            
                10.78
             |                     
            
                3.93
             |                                 
            
                252,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2011
             | 
            
                +0.20 / +1.85%
             |             
            
                10.50
             |           
            
                11.10
             |               
            
                10.50
             |                           
            
                11.00
             | 
            
                10.80
             |                     
            
                4.00
             |                                 
            
                204,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2011
             | 
            
                -0.20 / -1.82%
             |             
            
                11.00
             |           
            
                11.10
             |               
            
                10.70
             |                           
            
                10.80
             | 
            
                10.85
             |                     
            
                3.93
             |                                 
            
                202,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2011
             | 
            
                -0.70 / -5.98%
             |             
            
                11.80
             |           
            
                11.80
             |               
            
                11.00
             |                           
            
                11.00
             | 
            
                11.17
             |                     
            
                4.00
             |                                 
            
                268,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.90
             |           
            
                12.10
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.81
             |                     
            
                4.25
             |                                 
            
                166,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2011
             | 
            
                -0.70 / -5.65%
             |             
            
                12.10
             |           
            
                12.10
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.83
             |                     
            
                4.25
             |                                 
            
                209,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2011
             | 
            
                -0.20 / -1.59%
             |             
            
                12.40
             |           
            
                12.70
             |               
            
                12.20
             |                           
            
                12.40
             | 
            
                12.33
             |                     
            
                4.51
             |                                 
            
                123,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2011
             | 
            
                +0.50 / +4.13%
             |             
            
                12.30
             |           
            
                12.80
             |               
            
                12.20
             |                           
            
                12.60
             | 
            
                12.56
             |                     
            
                4.58
             |                                 
            
                107,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2011
             | 
            
                -0.50 / -3.97%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                11.90
             |                           
            
                12.10
             | 
            
                12.07
             |                     
            
                4.40
             |                                 
            
                243,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2011
             | 
            
                -0.60 / -4.55%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.40
             |                           
            
                12.60
             | 
            
                12.66
             |                     
            
                4.58
             |                                 
            
                289,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2011
             | 
            
                -0.20 / -1.49%
             |             
            
                13.30
             |           
            
                13.50
             |               
            
                13.10
             |                           
            
                13.20
             | 
            
                13.26
             |                     
            
                4.80
             |                                 
            
                99,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |