| 
                 
                    Closing price on 1/14/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    27.90 | 
                 
                
                    | High | 
                    29.80 | 
                 
                
                    | Low | 
                    26.10 | 
                     
                
                    | Volume | 
                    253,100 | 
                                 
                
                    | Split-adjusted Price | 
                    18.84 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CVN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/14/2011
             | 
            
                +0.60 / +2.07%
             |             
            
                27.90
             |           
            
                29.80
             |               
            
                26.10
             |                           
            
                29.60
             | 
            
                29.60
             |                     
            
                18.84
             |                                 
            
                253,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2011
             | 
            
                +0.10 / +0.35%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                27.00
             |                           
            
                29.00
             | 
            
                27.88
             |                     
            
                18.45
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2011
             | 
            
                -2.10 / -6.77%
             |             
            
                28.90
             |           
            
                28.90
             |               
            
                28.90
             |                           
            
                28.90
             | 
            
                28.90
             |                     
            
                18.39
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2011
             | 
            
                -2.30 / -6.91%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                31.00
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                19.73
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                33.30
             |                           
            
                33.30
             | 
            
                33.30
             |                     
            
                21.19
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                33.30
             |                           
            
                33.30
             | 
            
                33.30
             |                     
            
                21.19
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2011
             | 
            
                +2.00 / +6.39%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                33.30
             |                           
            
                33.30
             | 
            
                33.30
             |                     
            
                21.19
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2011
             | 
            
                -0.50 / -1.57%
             |             
            
                31.30
             |           
            
                31.30
             |               
            
                31.30
             |                           
            
                31.30
             | 
            
                31.30
             |                     
            
                19.92
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2011
             | 
            
                +0.80 / +2.58%
             |             
            
                31.80
             |           
            
                31.80
             |               
            
                31.80
             |                           
            
                31.80
             | 
            
                31.80
             |                     
            
                20.24
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2010
             | 
            
                +0.80 / +2.65%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                31.00
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                19.73
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2010
             | 
            
                -2.20 / -6.79%
             |             
            
                30.80
             |           
            
                30.80
             |               
            
                30.20
             |                           
            
                30.20
             | 
            
                30.32
             |                     
            
                19.22
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2010
             | 
            
                -0.50 / -1.52%
             |             
            
                32.40
             |           
            
                32.40
             |               
            
                32.40
             |                           
            
                32.40
             | 
            
                32.40
             |                     
            
                20.62
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2010
             | 
            
                +1.90 / +6.13%
             |             
            
                32.90
             |           
            
                32.90
             |               
            
                32.90
             |                           
            
                32.90
             | 
            
                32.90
             |                     
            
                20.94
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2010
             | 
            
                +1.00 / +3.33%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                31.00
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                19.73
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2010
             | 
            
                0.00 / 0.00%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                19.09
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2010
             | 
            
                -0.20 / -0.66%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                19.09
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2010
             | 
            
                +0.90 / +3.07%
             |             
            
                30.10
             |           
            
                30.20
             |               
            
                30.10
             |                           
            
                30.20
             | 
            
                30.18
             |                     
            
                19.22
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2010
             | 
            
                -1.30 / -4.25%
             |             
            
                29.30
             |           
            
                29.30
             |               
            
                29.30
             |                           
            
                29.30
             | 
            
                29.30
             |                     
            
                18.65
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2010
             | 
            
                +0.90 / +3.03%
             |             
            
                30.60
             |           
            
                30.60
             |               
            
                30.40
             |                           
            
                30.60
             | 
            
                30.54
             |                     
            
                19.47
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2010
             | 
            
                -1.50 / -4.81%
             |             
            
                30.20
             |           
            
                33.20
             |               
            
                29.70
             |                           
            
                29.70
             | 
            
                32.21
             |                     
            
                18.90
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2010
             | 
            
                -1.40 / -4.29%
             |             
            
                31.20
             |           
            
                31.20
             |               
            
                31.20
             |                           
            
                31.20
             | 
            
                31.20
             |                     
            
                19.85
             |                                 
            
                6,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2010
             | 
            
                +2.50 / +8.31%
             |             
            
                29.00
             |           
            
                32.60
             |               
            
                29.00
             |                           
            
                32.60
             | 
            
                31.39
             |                     
            
                20.75
             |                                 
            
                12,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2010
             | 
            
                +0.10 / +0.33%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                30.10
             |                           
            
                30.10
             | 
            
                30.46
             |                     
            
                19.15
             |                                 
            
                12,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2010
             | 
            
                +1.30 / +4.53%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                29.90
             |                           
            
                30.00
             | 
            
                30.01
             |                     
            
                19.09
             |                                 
            
                21,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2010
             | 
            
                -0.20 / -0.69%
             |             
            
                27.10
             |           
            
                28.70
             |               
            
                27.10
             |                           
            
                28.70
             | 
            
                28.20
             |                     
            
                18.26
             |                                 
            
                8,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2010
             | 
            
                +2.30 / +8.65%
             |             
            
                26.20
             |           
            
                28.90
             |               
            
                26.10
             |                           
            
                28.90
             | 
            
                26.91
             |                     
            
                18.39
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2010
             | 
            
                -2.80 / -9.52%
             |             
            
                27.20
             |           
            
                27.20
             |               
            
                26.60
             |                           
            
                26.60
             | 
            
                27.12
             |                     
            
                16.93
             |                                 
            
                11,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2010
             | 
            
                +0.60 / +2.08%
             |             
            
                27.50
             |           
            
                30.00
             |               
            
                27.40
             |                           
            
                29.40
             | 
            
                28.47
             |                     
            
                18.71
             |                                 
            
                9,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2010
             | 
            
                +1.80 / +6.67%
             |             
            
                28.80
             |           
            
                28.80
             |               
            
                28.80
             |                           
            
                28.80
             | 
            
                28.80
             |                     
            
                18.33
             |                                 
            
                5,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2010
             | 
            
                +0.40 / +1.50%
             |             
            
                27.00
             |           
            
                27.00
             |               
            
                27.00
             |                           
            
                27.00
             | 
            
                27.00
             |                     
            
                17.18
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |