| 
                 
                    Closing price on 4/27/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    16.40 | 
                 
                
                    | High | 
                    16.50 | 
                 
                
                    | Low | 
                    15.60 | 
                     
                
                    | Volume | 
                    9,400 | 
                                 
                
                    | Split-adjusted Price | 
                    6.85 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VKC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/27/2011
             | 
            
                -0.30 / -1.89%
             |             
            
                16.40
             |           
            
                16.50
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                16.14
             |                     
            
                6.85
             |                                 
            
                9,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2011
             | 
            
                -0.60 / -3.64%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                15.70
             |                           
            
                15.90
             | 
            
                16.75
             |                     
            
                6.98
             |                                 
            
                46,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2011
             | 
            
                +0.60 / +3.77%
             |             
            
                16.40
             |           
            
                17.00
             |               
            
                16.00
             |                           
            
                16.50
             | 
            
                16.77
             |                     
            
                7.24
             |                                 
            
                73,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2011
             | 
            
                +0.40 / +2.58%
             |             
            
                16.30
             |           
            
                16.80
             |               
            
                15.20
             |                           
            
                15.90
             | 
            
                16.40
             |                     
            
                6.98
             |                                 
            
                65,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2011
             | 
            
                -0.30 / -1.90%
             |             
            
                16.00
             |           
            
                16.50
             |               
            
                15.20
             |                           
            
                15.50
             | 
            
                16.29
             |                     
            
                6.80
             |                                 
            
                104,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.70
             |           
            
                16.00
             |               
            
                15.30
             |                           
            
                15.80
             | 
            
                15.82
             |                     
            
                6.94
             |                                 
            
                74,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2011
             | 
            
                +0.20 / +1.28%
             |             
            
                15.80
             |           
            
                16.00
             |               
            
                15.00
             |                           
            
                15.80
             | 
            
                15.79
             |                     
            
                6.94
             |                                 
            
                252,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2011
             | 
            
                -0.90 / -5.45%
             |             
            
                16.40
             |           
            
                16.50
             |               
            
                15.40
             |                           
            
                15.60
             | 
            
                15.80
             |                     
            
                6.85
             |                                 
            
                115,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2011
             | 
            
                -0.30 / -1.79%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.00
             |                           
            
                16.50
             | 
            
                16.45
             |                     
            
                7.24
             |                                 
            
                35,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2011
             | 
            
                -0.10 / -0.59%
             |             
            
                16.90
             |           
            
                17.00
             |               
            
                16.50
             |                           
            
                16.80
             | 
            
                16.85
             |                     
            
                7.37
             |                                 
            
                36,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2011
             | 
            
                +0.10 / +0.60%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                16.60
             |                           
            
                16.90
             | 
            
                16.87
             |                     
            
                7.42
             |                                 
            
                62,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2011
             | 
            
                -0.30 / -1.75%
             |             
            
                17.10
             |           
            
                17.30
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                17.10
             |                     
            
                7.37
             |                                 
            
                47,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2011
             | 
            
                -0.10 / -0.58%
             |             
            
                17.20
             |           
            
                17.40
             |               
            
                16.80
             |                           
            
                17.10
             | 
            
                17.14
             |                     
            
                7.51
             |                                 
            
                135,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2011
             | 
            
                +0.30 / +1.78%
             |             
            
                17.00
             |           
            
                17.40
             |               
            
                16.90
             |                           
            
                17.20
             | 
            
                17.09
             |                     
            
                7.55
             |                                 
            
                142,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2011
             | 
            
                -0.20 / -1.17%
             |             
            
                17.20
             |           
            
                17.30
             |               
            
                16.50
             |                           
            
                16.90
             | 
            
                16.93
             |                     
            
                7.42
             |                                 
            
                50,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2011
             | 
            
                -0.30 / -1.72%
             |             
            
                17.00
             |           
            
                17.60
             |               
            
                16.90
             |                           
            
                17.10
             | 
            
                17.04
             |                     
            
                7.51
             |                                 
            
                114,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2011
             | 
            
                -0.20 / -1.14%
             |             
            
                17.70
             |           
            
                18.00
             |               
            
                17.20
             |                           
            
                17.40
             | 
            
                17.58
             |                     
            
                7.64
             |                                 
            
                96,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2011
             | 
            
                -0.40 / -2.22%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.79
             |                     
            
                7.73
             |                                 
            
                86,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2011
             | 
            
                +0.50 / +2.86%
             |             
            
                17.10
             |           
            
                18.30
             |               
            
                17.00
             |                           
            
                18.00
             | 
            
                17.66
             |                     
            
                7.90
             |                                 
            
                238,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2011
             | 
            
                +0.40 / +2.34%
             |             
            
                17.00
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.50
             | 
            
                17.25
             |                     
            
                7.68
             |                                 
            
                127,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2011
             | 
            
                -0.50 / -2.84%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                16.80
             |                           
            
                17.10
             | 
            
                17.06
             |                     
            
                7.51
             |                                 
            
                84,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2011
             | 
            
                -1.10 / -5.88%
             |             
            
                18.70
             |           
            
                18.70
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.89
             |                     
            
                7.73
             |                                 
            
                178,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2011
             | 
            
                -0.80 / -4.10%
             |             
            
                19.40
             |           
            
                19.60
             |               
            
                18.40
             |                           
            
                18.70
             | 
            
                18.89
             |                     
            
                8.21
             |                                 
            
                135,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2011
             | 
            
                +0.10 / +0.52%
             |             
            
                19.30
             |           
            
                20.40
             |               
            
                18.40
             |                           
            
                19.50
             | 
            
                19.65
             |                     
            
                8.56
             |                                 
            
                483,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2011
             | 
            
                +1.00 / +5.43%
             |             
            
                18.40
             |           
            
                19.40
             |               
            
                18.40
             |                           
            
                19.40
             | 
            
                19.25
             |                     
            
                8.52
             |                                 
            
                354,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2011
             | 
            
                +1.00 / +5.75%
             |             
            
                17.20
             |           
            
                18.40
             |               
            
                17.20
             |                           
            
                18.40
             | 
            
                18.22
             |                     
            
                8.08
             |                                 
            
                415,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2011
             | 
            
                +0.40 / +2.35%
             |             
            
                17.30
             |           
            
                17.40
             |               
            
                17.00
             |                           
            
                17.40
             | 
            
                17.23
             |                     
            
                7.64
             |                                 
            
                176,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2011
             | 
            
                -0.10 / -0.58%
             |             
            
                17.20
             |           
            
                17.50
             |               
            
                16.40
             |                           
            
                17.00
             | 
            
                17.29
             |                     
            
                7.46
             |                                 
            
                85,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2011
             | 
            
                -0.30 / -1.72%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                16.50
             |                           
            
                17.10
             | 
            
                17.17
             |                     
            
                7.51
             |                                 
            
                117,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2011
             | 
            
                -0.40 / -2.25%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                17.10
             |                           
            
                17.40
             | 
            
                17.54
             |                     
            
                7.64
             |                                 
            
                60,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |