| 
                 
                    Closing price on 5/27/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    80.50 | 
                 
                
                    | High | 
                    80.50 | 
                 
                
                    | Low | 
                    80.50 | 
                     
                
                    | Volume | 
                    2,960 | 
                                 
                
                    | Split-adjusted Price | 
                    1.97 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2010
             | 
            
                0.00 / 0.00%
             |             
            
                85.00
             |           
            
                85.50
             |               
            
                84.50
             |                           
            
                84.50
             | 
            
                84.50
             |                     
            
                2.07
             |                                 
            
                5,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2010
             | 
            
                -2.00 / -2.31%
             |             
            
                84.50
             |           
            
                86.00
             |               
            
                84.00
             |                           
            
                84.50
             | 
            
                84.50
             |                     
            
                2.07
             |                                 
            
                10,790
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2010
             | 
            
                0.00 / 0.00%
             |             
            
                86.50
             |           
            
                87.00
             |               
            
                85.00
             |                           
            
                86.50
             | 
            
                86.50
             |                     
            
                2.12
             |                                 
            
                7,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2010
             | 
            
                -1.50 / -1.70%
             |             
            
                86.50
             |           
            
                87.00
             |               
            
                86.50
             |                           
            
                86.50
             | 
            
                86.50
             |                     
            
                2.12
             |                                 
            
                2,090
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2010
             | 
            
                +1.00 / +1.15%
             |             
            
                88.50
             |           
            
                88.50
             |               
            
                87.50
             |                           
            
                88.00
             | 
            
                88.00
             |                     
            
                2.15
             |                                 
            
                8,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2010
             | 
            
                0.00 / 0.00%
             |             
            
                87.50
             |           
            
                87.50
             |               
            
                87.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                2.13
             |                                 
            
                13,080
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2010
             | 
            
                0.00 / 0.00%
             |             
            
                88.00
             |           
            
                88.00
             |               
            
                86.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                2.13
             |                                 
            
                12,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2010
             | 
            
                +0.50 / +0.58%
             |             
            
                86.00
             |           
            
                87.00
             |               
            
                86.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                2.13
             |                                 
            
                8,470
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2010
             | 
            
                -0.50 / -0.57%
             |             
            
                86.50
             |           
            
                87.00
             |               
            
                86.50
             |                           
            
                86.50
             | 
            
                86.50
             |                     
            
                2.12
             |                                 
            
                4,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2010
             | 
            
                +2.50 / +2.96%
             |             
            
                84.50
             |           
            
                87.00
             |               
            
                84.50
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                2.13
             |                                 
            
                5,840
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2010
             | 
            
                -0.50 / -0.59%
             |             
            
                85.50
             |           
            
                88.00
             |               
            
                84.50
             |                           
            
                84.50
             | 
            
                84.50
             |                     
            
                2.07
             |                                 
            
                28,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2010
             | 
            
                0.00 / 0.00%
             |             
            
                85.00
             |           
            
                85.50
             |               
            
                85.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                2.08
             |                                 
            
                18,670
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2010
             | 
            
                -0.50 / -0.58%
             |             
            
                85.00
             |           
            
                85.00
             |               
            
                85.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                2.08
             |                                 
            
                220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2010
             | 
            
                -0.50 / -0.58%
             |             
            
                86.50
             |           
            
                86.50
             |               
            
                85.00
             |                           
            
                85.50
             | 
            
                85.50
             |                     
            
                2.09
             |                                 
            
                26,050
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2010
             | 
            
                0.00 / 0.00%
             |             
            
                86.00
             |           
            
                86.00
             |               
            
                86.00
             |                           
            
                86.00
             | 
            
                86.00
             |                     
            
                2.11
             |                                 
            
                9,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2010
             | 
            
                0.00 / 0.00%
             |             
            
                86.00
             |           
            
                86.00
             |               
            
                86.00
             |                           
            
                86.00
             | 
            
                86.00
             |                     
            
                2.11
             |                                 
            
                7,020
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2010
             | 
            
                0.00 / 0.00%
             |             
            
                86.00
             |           
            
                86.00
             |               
            
                86.00
             |                           
            
                86.00
             | 
            
                86.00
             |                     
            
                2.11
             |                                 
            
                12,010
             |  
            
                 
             |                                                              
             
    
         
    
    
 |