| 
                 
                    Closing price on 2/27/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    26.00 | 
                 
                
                    | High | 
                    26.00 | 
                 
                
                    | Low | 
                    26.00 | 
                     
                
                    | Volume | 
                    192,275 | 
                                 
                
                    | Split-adjusted Price | 
                    16.55 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CVN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                192,275
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                192,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                215,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                260,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                173,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                253,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                125,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                155,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                140,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                170,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2012
             | 
            
                -0.10 / -0.38%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                55,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                145,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/7/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                224,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                120,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                326,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                73,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                140,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.10
             |           
            
                26.10
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                16.61
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2012
             | 
            
                -0.30 / -1.14%
             |             
            
                26.40
             |           
            
                26.40
             |               
            
                26.10
             |                           
            
                26.10
             | 
            
                26.13
             |                     
            
                16.61
             |                                 
            
                121,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.40
             |           
            
                26.40
             |               
            
                26.40
             |                           
            
                26.40
             | 
            
                26.40
             |                     
            
                16.80
             |                                 
            
                130,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2012
             | 
            
                -0.40 / -1.49%
             |             
            
                26.80
             |           
            
                26.80
             |               
            
                26.40
             |                           
            
                26.40
             | 
            
                26.43
             |                     
            
                16.80
             |                                 
            
                230,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.80
             |           
            
                26.80
             |               
            
                26.80
             |                           
            
                26.80
             | 
            
                26.80
             |                     
            
                17.05
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.80
             |           
            
                26.80
             |               
            
                26.80
             |                           
            
                26.80
             | 
            
                26.80
             |                     
            
                17.05
             |                                 
            
                274,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2012
             | 
            
                -0.10 / -0.37%
             |             
            
                26.90
             |           
            
                26.90
             |               
            
                26.80
             |                           
            
                26.80
             | 
            
                26.80
             |                     
            
                17.05
             |                                 
            
                133,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.90
             |           
            
                26.90
             |               
            
                26.90
             |                           
            
                26.90
             | 
            
                26.90
             |                     
            
                17.12
             |                                 
            
                70,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.90
             |           
            
                26.90
             |               
            
                26.90
             |                           
            
                26.90
             | 
            
                26.90
             |                     
            
                17.12
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.90
             |           
            
                26.90
             |               
            
                26.90
             |                           
            
                26.90
             | 
            
                26.90
             |                     
            
                17.12
             |                                 
            
                371,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |