| 
                 
                    Closing price on 2/8/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.70 | 
                 
                
                    | High | 
                    3.80 | 
                 
                
                    | Low | 
                    3.70 | 
                     
                
                    | Volume | 
                    274,400 | 
                                 
                
                    | Split-adjusted Price | 
                    1.97 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VKC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/8/2012
             | 
            
                +0.10 / +2.70%
             |             
            
                3.70
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.76
             |                     
            
                1.97
             |                                 
            
                274,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2012
             | 
            
                +0.20 / +5.71%
             |             
            
                3.50
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.70
             | 
            
                3.60
             |                     
            
                1.92
             |                                 
            
                214,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2012
             | 
            
                +0.10 / +2.94%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.53
             |                     
            
                1.82
             |                                 
            
                174,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.46
             |                     
            
                1.76
             |                                 
            
                290,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2012
             | 
            
                +0.20 / +6.25%
             |             
            
                3.20
             |           
            
                3.40
             |               
            
                3.20
             |                           
            
                3.40
             | 
            
                3.40
             |                     
            
                1.76
             |                                 
            
                379,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2012
             | 
            
                -0.10 / -3.03%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.21
             |                     
            
                1.66
             |                                 
            
                118,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2012
             | 
            
                -0.10 / -2.94%
             |             
            
                3.30
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.39
             |                     
            
                1.71
             |                                 
            
                160,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.43
             |                     
            
                1.76
             |                                 
            
                220,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2012
             | 
            
                -0.10 / -2.86%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.57
             |                     
            
                1.76
             |                                 
            
                737,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2012
             | 
            
                +0.20 / +6.06%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.50
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                1.82
             |                                 
            
                354,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2012
             | 
            
                +0.20 / +6.45%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.30
             | 
            
                3.29
             |                     
            
                1.71
             |                                 
            
                315,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2012
             | 
            
                +0.20 / +6.90%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.10
             | 
            
                3.06
             |                     
            
                1.61
             |                                 
            
                344,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2012
             | 
            
                +0.20 / +7.41%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.87
             |                     
            
                1.50
             |                                 
            
                324,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2012
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.78
             |                     
            
                1.40
             |                                 
            
                149,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2012
             | 
            
                +0.10 / +3.70%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.82
             |                     
            
                1.45
             |                                 
            
                152,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2012
             | 
            
                -0.20 / -6.90%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.81
             |                     
            
                1.40
             |                                 
            
                162,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2012
             | 
            
                +0.20 / +7.41%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.78
             |                     
            
                1.50
             |                                 
            
                232,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2012
             | 
            
                -0.10 / -3.57%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.77
             |                     
            
                1.40
             |                                 
            
                145,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2012
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.83
             |                     
            
                1.45
             |                                 
            
                103,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2012
             | 
            
                +0.10 / +3.57%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.96
             |                     
            
                1.50
             |                                 
            
                168,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2012
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.89
             |                     
            
                1.45
             |                                 
            
                150,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2012
             | 
            
                -0.10 / -3.33%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.99
             |                     
            
                1.50
             |                                 
            
                72,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2011
             | 
            
                +0.20 / +7.14%
             |             
            
                2.70
             |           
            
                3.10
             |               
            
                2.70
             |                           
            
                3.00
             | 
            
                3.01
             |                     
            
                1.56
             |                                 
            
                153,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2011
             | 
            
                -0.20 / -6.67%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.93
             |                     
            
                1.45
             |                                 
            
                162,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.04
             |                     
            
                1.56
             |                                 
            
                272,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.00
             |                     
            
                1.56
             |                                 
            
                39,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2011
             | 
            
                -0.20 / -6.25%
             |             
            
                3.20
             |           
            
                3.20
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.17
             |                     
            
                1.56
             |                                 
            
                81,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                3.20
             |           
            
                3.20
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.14
             |                     
            
                1.66
             |                                 
            
                156,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2011
             | 
            
                -0.10 / -3.03%
             |             
            
                3.40
             |           
            
                3.40
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.33
             |                     
            
                1.66
             |                                 
            
                78,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2011
             | 
            
                -0.10 / -2.94%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.41
             |                     
            
                1.71
             |                                 
            
                252,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |