| 
                 
                    Closing price on 8/14/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.70 | 
                 
                
                    | High | 
                    10.80 | 
                 
                
                    | Low | 
                    10.60 | 
                     
                
                    | Volume | 
                    38,200 | 
                                 
                
                    | Split-adjusted Price | 
                    6.84 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVE Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/14/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.70
             |           
            
                10.80
             |               
            
                10.60
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.84
             |                                 
            
                38,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.60
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.84
             |                                 
            
                6,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2012
             | 
            
                -0.10 / -0.93%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.60
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.84
             |                                 
            
                21,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2012
             | 
            
                -0.10 / -0.92%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.90
             |                                 
            
                9,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.60
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                6.97
             |                                 
            
                6,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.10
             |           
            
                11.20
             |               
            
                10.70
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                6.97
             |                                 
            
                14,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2012
             | 
            
                +0.20 / +1.87%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.70
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                6.97
             |                                 
            
                12,250
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2012
             | 
            
                +0.10 / +0.94%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.60
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.84
             |                                 
            
                21,225
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.60
             |           
            
                10.80
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                9,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2012
             | 
            
                -0.20 / -1.85%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                26,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2012
             | 
            
                +0.10 / +0.93%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.60
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.90
             |                                 
            
                24,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2012
             | 
            
                -0.10 / -0.93%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.84
             |                                 
            
                19,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                11.00
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.90
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2012
             | 
            
                -0.20 / -1.82%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.90
             |                                 
            
                29,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2012
             | 
            
                -0.10 / -0.90%
             |             
            
                11.10
             |           
            
                11.10
             |               
            
                10.90
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                7.03
             |                                 
            
                59,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2012
             | 
            
                -0.30 / -2.63%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                11.10
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                7.10
             |                                 
            
                35,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2012
             | 
            
                -0.10 / -0.87%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                7.29
             |                                 
            
                32,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2012
             | 
            
                +0.50 / +4.55%
             |             
            
                10.90
             |           
            
                11.60
             |               
            
                10.80
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.35
             |                                 
            
                87,750
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2012
             | 
            
                -0.30 / -2.65%
             |             
            
                11.00
             |           
            
                11.10
             |               
            
                11.00
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                7.03
             |                                 
            
                13,259
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2012
             | 
            
                +0.70 / +6.60%
             |             
            
                10.60
             |           
            
                11.30
             |               
            
                10.60
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                7.22
             |                                 
            
                62,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2012
             | 
            
                -0.40 / -3.64%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                16,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2012
             | 
            
                +0.50 / +4.76%
             |             
            
                10.50
             |           
            
                11.10
             |               
            
                10.50
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                7.03
             |                                 
            
                32,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2012
             | 
            
                +0.20 / +1.94%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.71
             |                                 
            
                893,275
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/11/2012
             | 
            
                +0.10 / +0.98%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.58
             |                                 
            
                9,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2012
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.52
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2012
             | 
            
                -0.30 / -2.83%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.58
             |                                 
            
                26,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.60
             |           
            
                10.70
             |               
            
                10.50
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                24,795
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2012
             | 
            
                +0.20 / +1.92%
             |             
            
                10.40
             |           
            
                10.70
             |               
            
                10.30
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.78
             |                                 
            
                32,625
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2012
             | 
            
                -0.10 / -0.95%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.30
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.65
             |                                 
            
                30,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |