| 
                 
                    Closing price on 10/11/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    33.90 | 
                 
                
                    | High | 
                    35.70 | 
                 
                
                    | Low | 
                    33.90 | 
                     
                
                    | Volume | 
                    14,700 | 
                                 
                
                    | Split-adjusted Price | 
                    22.72 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CVN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/11/2010
             | 
            
                -0.70 / -1.92%
             |             
            
                33.90
             |           
            
                35.70
             |               
            
                33.90
             |                           
            
                35.70
             | 
            
                35.34
             |                     
            
                22.72
             |                                 
            
                14,700
             |            
            
                 
             |                                       
         
    
        
            | 
                10/8/2010
             | 
            
                +0.10 / +0.28%
             |             
            
                35.00
             |           
            
                37.30
             |               
            
                34.90
             |                           
            
                36.40
             | 
            
                35.84
             |                     
            
                23.16
             |                                 
            
                11,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/7/2010
             | 
            
                -0.70 / -1.89%
             |             
            
                37.40
             |           
            
                37.50
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.96
             |                     
            
                23.10
             |                                 
            
                16,400
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2010
             | 
            
                +1.50 / +4.23%
             |             
            
                35.30
             |           
            
                37.40
             |               
            
                35.20
             |                           
            
                37.00
             | 
            
                36.27
             |                     
            
                23.55
             |                                 
            
                22,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2010
             | 
            
                +3.40 / +10.59%
             |             
            
                34.50
             |           
            
                35.50
             |               
            
                34.50
             |                           
            
                35.50
             | 
            
                35.07
             |                     
            
                22.59
             |                                 
            
                14,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/4/2010
             | 
            
                -1.90 / -5.59%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                32.10
             |                           
            
                32.10
             | 
            
                33.29
             |                     
            
                20.43
             |                                 
            
                22,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/1/2010
             | 
            
                -2.10 / -5.82%
             |             
            
                34.00
             |           
            
                36.00
             |               
            
                33.80
             |                           
            
                34.00
             | 
            
                34.48
             |                     
            
                21.64
             |                                 
            
                33,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2010
             | 
            
                -2.90 / -7.44%
             |             
            
                36.10
             |           
            
                40.00
             |               
            
                36.10
             |                           
            
                36.10
             | 
            
                36.17
             |                     
            
                22.97
             |                                 
            
                13,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/29/2010
             | 
            
                -4.00 / -9.30%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.80
             |                           
            
                39.00
             | 
            
                38.83
             |                     
            
                24.82
             |                                 
            
                10,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/28/2010
             | 
            
                +4.00 / +10.26%
             |             
            
                39.00
             |           
            
                43.40
             |               
            
                39.00
             |                           
            
                43.00
             | 
            
                41.71
             |                     
            
                27.36
             |                                 
            
                25,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/27/2010
             | 
            
                -1.90 / -4.65%
             |             
            
                40.70
             |           
            
                41.90
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                40.61
             |                     
            
                24.82
             |                                 
            
                20,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/24/2010
             | 
            
                +0.70 / +1.74%
             |             
            
                40.00
             |           
            
                40.90
             |               
            
                40.00
             |                           
            
                40.90
             | 
            
                40.65
             |                     
            
                26.03
             |                                 
            
                12,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/23/2010
             | 
            
                -2.80 / -6.51%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                40.20
             |                           
            
                40.20
             | 
            
                40.31
             |                     
            
                25.58
             |                                 
            
                22,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/22/2010
             | 
            
                +1.40 / +3.37%
             |             
            
                44.50
             |           
            
                44.50
             |               
            
                42.80
             |                           
            
                43.00
             | 
            
                43.17
             |                     
            
                27.36
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/21/2010
             | 
            
                +2.70 / +6.94%
             |             
            
                41.60
             |           
            
                41.60
             |               
            
                41.60
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                26.47
             |                                 
            
                18,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/20/2010
             | 
            
                +0.90 / +2.37%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                24.75
             |                                 
            
                4,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/17/2010
             | 
            
                +3.70 / +10.79%
             |             
            
                37.90
             |           
            
                38.00
             |               
            
                36.00
             |                           
            
                38.00
             | 
            
                36.44
             |                     
            
                24.18
             |                                 
            
                26,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2010
             | 
            
                +0.50 / +1.48%
             |             
            
                34.30
             |           
            
                35.80
             |               
            
                34.30
             |                           
            
                34.30
             | 
            
                35.57
             |                     
            
                21.83
             |                                 
            
                5,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2010
             | 
            
                -0.20 / -0.59%
             |             
            
                33.90
             |           
            
                33.90
             |               
            
                33.80
             |                           
            
                33.80
             | 
            
                33.84
             |                     
            
                21.51
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2010
             | 
            
                -0.40 / -1.16%
             |             
            
                34.50
             |           
            
                36.80
             |               
            
                32.10
             |                           
            
                34.00
             | 
            
                33.65
             |                     
            
                21.64
             |                                 
            
                23,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2010
             | 
            
                -1.30 / -3.64%
             |             
            
                35.00
             |           
            
                35.40
             |               
            
                34.00
             |                           
            
                34.40
             | 
            
                34.44
             |                     
            
                21.89
             |                                 
            
                18,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2010
             | 
            
                -0.30 / -0.83%
             |             
            
                36.00
             |           
            
                38.00
             |               
            
                35.70
             |                           
            
                35.70
             | 
            
                36.40
             |                     
            
                22.72
             |                                 
            
                19,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2010
             | 
            
                +0.20 / +0.56%
             |             
            
                38.40
             |           
            
                38.40
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                37.71
             |                     
            
                22.91
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2010
             | 
            
                -1.20 / -3.24%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                35.80
             |                           
            
                35.80
             | 
            
                35.97
             |                     
            
                22.78
             |                                 
            
                25,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2010
             | 
            
                +0.80 / +2.21%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                23.55
             |                                 
            
                25,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2010
             | 
            
                +2.20 / +6.47%
             |             
            
                36.20
             |           
            
                36.20
             |               
            
                36.20
             |                           
            
                36.20
             | 
            
                36.20
             |                     
            
                23.04
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2010
             | 
            
                +1.90 / +5.92%
             |             
            
                33.00
             |           
            
                34.00
             |               
            
                33.00
             |                           
            
                34.00
             | 
            
                33.93
             |                     
            
                21.64
             |                                 
            
                19,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2010
             | 
            
                +2.10 / +7.00%
             |             
            
                32.10
             |           
            
                32.10
             |               
            
                32.10
             |                           
            
                32.10
             | 
            
                32.10
             |                     
            
                20.43
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2010
             | 
            
                +1.50 / +5.26%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                19.09
             |                                 
            
                13,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2010
             | 
            
                +0.40 / +1.42%
             |             
            
                28.00
             |           
            
                28.50
             |               
            
                28.00
             |                           
            
                28.50
             | 
            
                28.25
             |                     
            
                18.14
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |