| 
                 
                    Closing price on 6/21/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    82.00 | 
                 
                
                    | High | 
                    82.50 | 
                 
                
                    | Low | 
                    82.00 | 
                     
                
                    | Volume | 
                    6,370 | 
                                 
                
                    | Split-adjusted Price | 
                    2.01 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/21/2010
             | 
            
                +1.00 / +1.23%
             |             
            
                82.00
             |           
            
                82.50
             |               
            
                82.00
             |                           
            
                82.00
             | 
            
                82.00
             |                     
            
                2.01
             |                                 
            
                6,370
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2010
             | 
            
                0.00 / 0.00%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                9,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2010
             | 
            
                +1.00 / +1.25%
             |             
            
                80.00
             |           
            
                81.00
             |               
            
                80.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                10,170
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2010
             | 
            
                +0.50 / +0.63%
             |             
            
                81.50
             |           
            
                81.50
             |               
            
                80.00
             |                           
            
                80.00
             | 
            
                80.00
             |                     
            
                1.96
             |                                 
            
                8,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2010
             | 
            
                -0.50 / -0.63%
             |             
            
                79.00
             |           
            
                79.50
             |               
            
                79.00
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                2,150
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2010
             | 
            
                +0.50 / +0.63%
             |             
            
                79.50
             |           
            
                80.00
             |               
            
                79.50
             |                           
            
                80.00
             | 
            
                80.00
             |                     
            
                1.96
             |                                 
            
                10,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2010
             | 
            
                -0.50 / -0.63%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                79.50
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                3,750
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2010
             | 
            
                +0.50 / +0.63%
             |             
            
                79.50
             |           
            
                80.00
             |               
            
                79.50
             |                           
            
                80.00
             | 
            
                80.00
             |                     
            
                1.96
             |                                 
            
                180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                79.50
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                310
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2010
             | 
            
                0.00 / 0.00%
             |             
            
                79.50
             |           
            
                79.50
             |               
            
                79.00
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                4,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2010
             | 
            
                -1.00 / -1.24%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                79.50
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                12,570
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2010
             | 
            
                +1.00 / +1.26%
             |             
            
                80.00
             |           
            
                80.50
             |               
            
                80.00
             |                           
            
                80.50
             | 
            
                80.50
             |                     
            
                1.97
             |                                 
            
                8,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2010
             | 
            
                0.00 / 0.00%
             |             
            
                83.00
             |           
            
                83.00
             |               
            
                79.50
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                24,550
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2010
             | 
            
                -1.50 / -1.85%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                79.50
             |                           
            
                79.50
             | 
            
                79.50
             |                     
            
                1.95
             |                                 
            
                1,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2010
             | 
            
                0.00 / 0.00%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                80.50
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                6,880
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2010
             | 
            
                0.00 / 0.00%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                11,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2010
             | 
            
                +0.50 / +0.62%
             |             
            
                81.50
             |           
            
                81.50
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                1,220
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2010
             | 
            
                +0.50 / +0.63%
             |             
            
                80.50
             |           
            
                80.50
             |               
            
                80.50
             |                           
            
                80.50
             | 
            
                80.50
             |                     
            
                1.97
             |                                 
            
                2,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2010
             | 
            
                +1.00 / +1.27%
             |             
            
                78.50
             |           
            
                81.00
             |               
            
                78.50
             |                           
            
                80.00
             | 
            
                80.00
             |                     
            
                1.96
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2010
             | 
            
                +0.50 / +0.64%
             |             
            
                78.50
             |           
            
                79.00
             |               
            
                78.50
             |                           
            
                79.00
             | 
            
                79.00
             |                     
            
                1.93
             |                                 
            
                25,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2010
             | 
            
                +1.50 / +1.95%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                77.00
             |                           
            
                78.50
             | 
            
                78.50
             |                     
            
                1.92
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2010
             | 
            
                -4.00 / -4.94%
             |             
            
                77.00
             |           
            
                81.00
             |               
            
                77.00
             |                           
            
                77.00
             | 
            
                77.00
             |                     
            
                1.89
             |                                 
            
                30,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2010
             | 
            
                0.00 / 0.00%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                79.50
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                6,170
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2010
             | 
            
                -2.00 / -2.41%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                1.98
             |                                 
            
                4,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2010
             | 
            
                0.00 / 0.00%
             |             
            
                82.50
             |           
            
                84.00
             |               
            
                82.50
             |                           
            
                83.00
             | 
            
                83.00
             |                     
            
                2.03
             |                                 
            
                20,860
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2010
             | 
            
                -2.00 / -2.35%
             |             
            
                85.50
             |           
            
                85.50
             |               
            
                83.00
             |                           
            
                83.00
             | 
            
                83.00
             |                     
            
                2.03
             |                                 
            
                1,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2010
             | 
            
                0.00 / 0.00%
             |             
            
                85.50
             |           
            
                86.50
             |               
            
                85.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                2.08
             |                                 
            
                19,110
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2010
             | 
            
                +1.00 / +1.19%
             |             
            
                86.00
             |           
            
                86.00
             |               
            
                84.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                2.08
             |                                 
            
                11,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2010
             | 
            
                -1.00 / -1.18%
             |             
            
                84.50
             |           
            
                85.00
             |               
            
                84.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                2.06
             |                                 
            
                6,010
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2010
             | 
            
                +0.50 / +0.59%
             |             
            
                86.00
             |           
            
                86.50
             |               
            
                85.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                2.08
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |