| 
                 
                    Closing price on 3/23/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    23.00 | 
                 
                
                    | High | 
                    23.00 | 
                 
                
                    | Low | 
                    23.00 | 
                     
                
                    | Volume | 
                    297,500 | 
                                 
                
                    | Split-adjusted Price | 
                    14.64 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CVN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/23/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                297,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                80,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                264,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                211,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                125,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                416,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                275,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                275,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                233,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2012
             | 
            
                -1.70 / -6.88%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                14.64
             |                                 
            
                14,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                24.70
             |           
            
                24.70
             |               
            
                24.70
             |                           
            
                24.70
             | 
            
                24.70
             |                     
            
                15.72
             |                                 
            
                275,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2012
             | 
            
                0.00 / 0.00%
             |             
            
                24.70
             |           
            
                24.70
             |               
            
                24.70
             |                           
            
                24.70
             | 
            
                24.70
             |                     
            
                15.72
             |                                 
            
                93,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2012
             | 
            
                +0.50 / +2.07%
             |             
            
                24.70
             |           
            
                24.70
             |               
            
                24.70
             |                           
            
                24.70
             | 
            
                24.70
             |                     
            
                15.72
             |                                 
            
                195,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2012
             | 
            
                -1.80 / -6.92%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                24.20
             |                           
            
                24.20
             | 
            
                24.65
             |                     
            
                15.40
             |                                 
            
                180,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                129,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                165,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                168,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                16.55
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |