| 
                 
                    Closing price on 6/5/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.30 | 
                 
                
                    | High | 
                    9.30 | 
                 
                
                    | Low | 
                    9.20 | 
                     
                
                    | Volume | 
                    4,700 | 
                                 
                
                    | Split-adjusted Price | 
                    1.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CVT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.30
             |               
            
                9.20
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                1.50
             |                                 
            
                4,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2013
             | 
            
                -0.10 / -1.06%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.30
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                1.50
             |                                 
            
                10,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2013
             | 
            
                +0.10 / +1.08%
             |             
            
                9.50
             |           
            
                9.50
             |               
            
                9.30
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                1.52
             |                                 
            
                18,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2013
             | 
            
                +0.10 / +1.09%
             |             
            
                9.20
             |           
            
                9.30
             |               
            
                9.20
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                1.50
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2013
             | 
            
                0.00 / 0.00%
             |             
            
                9.10
             |           
            
                9.20
             |               
            
                9.10
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                1.49
             |                                 
            
                12,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2013
             | 
            
                +0.20 / +2.22%
             |             
            
                9.10
             |           
            
                9.20
             |               
            
                9.10
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                1.49
             |                                 
            
                23,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                9.00
             |               
            
                8.90
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                1.46
             |                                 
            
                56,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2013
             | 
            
                0.00 / 0.00%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                1.46
             |                                 
            
                32,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2013
             | 
            
                +0.10 / +1.12%
             |             
            
                8.90
             |           
            
                9.00
             |               
            
                8.90
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                1.46
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                30,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2013
             | 
            
                +0.10 / +1.14%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                23,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2013
             | 
            
                -0.20 / -2.22%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                8,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2013
             | 
            
                +0.10 / +1.12%
             |             
            
                8.90
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                1.46
             |                                 
            
                6,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2013
             | 
            
                +0.20 / +2.30%
             |             
            
                8.80
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                2,525
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                1.41
             |                                 
            
                18,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2013
             | 
            
                -0.20 / -2.25%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                1.41
             |                                 
            
                16,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2013
             | 
            
                +0.10 / +1.14%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                10,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                15,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2013
             | 
            
                -0.10 / -1.12%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                25,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                12,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                32,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2013
             | 
            
                +0.10 / +1.14%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.70
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2013
             | 
            
                -0.10 / -1.12%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2013
             | 
            
                +0.10 / +1.14%
             |             
            
                8.80
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                1.44
             |                                 
            
                26,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                17,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                1.42
             |                                 
            
                9,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |