| 
                 
                    Closing price on 12/20/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.60 | 
                 
                
                    | High | 
                    12.60 | 
                 
                
                    | Low | 
                    12.30 | 
                     
                
                    | Volume | 
                    149,800 | 
                                 
                
                    | Split-adjusted Price | 
                    5.24 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/20/2012
             | 
            
                -0.20 / -1.60%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.38
             |                     
            
                5.24
             |                                 
            
                149,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2012
             | 
            
                +0.20 / +1.63%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.45
             |                     
            
                5.32
             |                                 
            
                135,717
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2012
             | 
            
                -0.10 / -0.81%
             |             
            
                12.40
             |           
            
                12.50
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.33
             |                     
            
                5.24
             |                                 
            
                186,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2012
             | 
            
                +0.10 / +0.81%
             |             
            
                12.20
             |           
            
                12.60
             |               
            
                12.20
             |                           
            
                12.40
             | 
            
                12.44
             |                     
            
                5.28
             |                                 
            
                378,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2012
             | 
            
                -0.20 / -1.60%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.33
             |                     
            
                5.24
             |                                 
            
                296,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                12.70
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.47
             |                     
            
                5.32
             |                                 
            
                300,039
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2012
             | 
            
                +0.30 / +2.46%
             |             
            
                12.00
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.50
             | 
            
                12.38
             |                     
            
                5.32
             |                                 
            
                210,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2012
             | 
            
                +0.40 / +3.39%
             |             
            
                12.00
             |           
            
                12.50
             |               
            
                11.60
             |                           
            
                12.20
             | 
            
                12.12
             |                     
            
                5.19
             |                                 
            
                665,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2012
             | 
            
                +0.10 / +0.85%
             |             
            
                11.60
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.80
             | 
            
                11.73
             |                     
            
                5.02
             |                                 
            
                261,240
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.80
             |           
            
                11.80
             |               
            
                11.50
             |                           
            
                11.70
             | 
            
                11.62
             |                     
            
                4.98
             |                                 
            
                100,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2012
             | 
            
                -0.10 / -0.85%
             |             
            
                11.70
             |           
            
                11.80
             |               
            
                11.60
             |                           
            
                11.70
             | 
            
                11.68
             |                     
            
                4.98
             |                                 
            
                148,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2012
             | 
            
                +0.10 / +0.85%
             |             
            
                11.70
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.80
             | 
            
                11.73
             |                     
            
                5.02
             |                                 
            
                187,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2012
             | 
            
                +0.30 / +2.63%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.70
             | 
            
                11.52
             |                     
            
                4.98
             |                                 
            
                130,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2012
             | 
            
                +0.10 / +0.88%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.36
             |                     
            
                4.85
             |                                 
            
                50,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2012
             | 
            
                -0.10 / -0.88%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.33
             |                     
            
                4.81
             |                                 
            
                51,434
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2012
             | 
            
                +0.10 / +0.88%
             |             
            
                11.30
             |           
            
                11.40
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.27
             |                     
            
                4.85
             |                                 
            
                171,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2012
             | 
            
                -0.10 / -0.88%
             |             
            
                11.30
             |           
            
                11.50
             |               
            
                11.20
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                4.81
             |                                 
            
                42,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2012
             | 
            
                +0.10 / +0.88%
             |             
            
                11.30
             |           
            
                11.40
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.34
             |                     
            
                4.85
             |                                 
            
                82,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2012
             | 
            
                -0.20 / -1.74%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.37
             |                     
            
                4.81
             |                                 
            
                172,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2012
             | 
            
                -0.20 / -1.71%
             |             
            
                11.60
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.57
             |                     
            
                4.90
             |                                 
            
                124,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.70
             |               
            
                11.60
             |                           
            
                11.70
             | 
            
                11.60
             |                     
            
                4.98
             |                                 
            
                82,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2012
             | 
            
                -1.30 / -10.00%
             |             
            
                11.80
             |           
            
                11.90
             |               
            
                11.50
             |                           
            
                11.70
             | 
            
                11.66
             |                     
            
                4.98
             |                                 
            
                184,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                13.00
             | 
            
                12.95
             |                     
            
                4.93
             |                                 
            
                346,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.90
             |                           
            
                13.00
             | 
            
                12.96
             |                     
            
                4.93
             |                                 
            
                188,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2012
             | 
            
                +0.10 / +0.78%
             |             
            
                12.80
             |           
            
                13.00
             |               
            
                12.50
             |                           
            
                13.00
             | 
            
                12.89
             |                     
            
                4.93
             |                                 
            
                269,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2012
             | 
            
                -0.10 / -0.77%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                12.98
             |                     
            
                4.90
             |                                 
            
                324,974
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2012
             | 
            
                -0.10 / -0.76%
             |             
            
                13.00
             |           
            
                13.20
             |               
            
                12.90
             |                           
            
                13.00
             | 
            
                13.03
             |                     
            
                4.93
             |                                 
            
                248,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2012
             | 
            
                -0.20 / -1.50%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                12.90
             |                           
            
                13.10
             | 
            
                13.09
             |                     
            
                4.97
             |                                 
            
                310,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2012
             | 
            
                +0.60 / +4.72%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                12.90
             |                           
            
                13.30
             | 
            
                13.22
             |                     
            
                5.05
             |                                 
            
                794,103
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2012
             | 
            
                +0.70 / +5.83%
             |             
            
                12.50
             |           
            
                12.70
             |               
            
                12.20
             |                           
            
                12.70
             | 
            
                12.60
             |                     
            
                4.82
             |                                 
            
                349,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |