| 
                 
                    Closing price on 5/21/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.00 | 
                 
                
                    | High | 
                    13.70 | 
                 
                
                    | Low | 
                    12.90 | 
                     
                
                    | Volume | 
                    31,800 | 
                                 
                
                    | Split-adjusted Price | 
                    1.83 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VCS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/21/2012
             | 
            
                +0.60 / +4.62%
             |             
            
                13.00
             |           
            
                13.70
             |               
            
                12.90
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                1.83
             |                                 
            
                31,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2012
             | 
            
                +0.60 / +4.84%
             |             
            
                12.50
             |           
            
                13.10
             |               
            
                11.70
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                1.75
             |                                 
            
                127,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2012
             | 
            
                -0.60 / -4.62%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                1.67
             |                                 
            
                95,153
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2012
             | 
            
                -0.70 / -5.11%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                12.90
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                1.75
             |                                 
            
                126,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2012
             | 
            
                -1.00 / -6.80%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                13.70
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                1.84
             |                                 
            
                97,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2012
             | 
            
                -0.90 / -5.77%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                14.60
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                1.98
             |                                 
            
                50,564
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2012
             | 
            
                +0.20 / +1.30%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                15.00
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                2.10
             |                                 
            
                53,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2012
             | 
            
                +1.00 / +6.94%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                15.00
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                2.07
             |                                 
            
                459,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2012
             | 
            
                +0.90 / +6.67%
             |             
            
                13.70
             |           
            
                14.40
             |               
            
                13.50
             |                           
            
                14.40
             | 
            
                14.40
             |                     
            
                1.94
             |                                 
            
                468,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2012
             | 
            
                -0.20 / -1.46%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                75,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2012
             | 
            
                +0.30 / +2.24%
             |             
            
                13.60
             |           
            
                13.80
             |               
            
                13.50
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                1.84
             |                                 
            
                74,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2012
             | 
            
                -0.10 / -0.74%
             |             
            
                13.40
             |           
            
                13.50
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                54,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2012
             | 
            
                +0.10 / +0.75%
             |             
            
                13.40
             |           
            
                13.50
             |               
            
                13.40
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                18,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2012
             | 
            
                -0.20 / -1.47%
             |             
            
                13.70
             |           
            
                13.90
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                30,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2012
             | 
            
                +0.10 / +0.74%
             |             
            
                13.50
             |           
            
                13.60
             |               
            
                13.50
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                1.83
             |                                 
            
                4,066
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2012
             | 
            
                -0.20 / -1.46%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.40
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                12,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2012
             | 
            
                +0.10 / +0.74%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                13.60
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                1.84
             |                                 
            
                35,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2012
             | 
            
                -0.20 / -1.45%
             |             
            
                13.30
             |           
            
                13.60
             |               
            
                13.10
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                1.83
             |                                 
            
                1,428,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2012
             | 
            
                +0.60 / +4.55%
             |             
            
                13.00
             |           
            
                13.80
             |               
            
                13.00
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                1.86
             |                                 
            
                24,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                13.20
             |               
            
                12.60
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                1.78
             |                                 
            
                5,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2012
             | 
            
                -0.30 / -2.22%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.10
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                1.78
             |                                 
            
                64,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.70
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                1,429,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2012
             | 
            
                -0.20 / -1.46%
             |             
            
                13.70
             |           
            
                13.80
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                4,466,429
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2012
             | 
            
                +0.30 / +2.24%
             |             
            
                13.20
             |           
            
                13.70
             |               
            
                13.20
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                1.84
             |                                 
            
                42,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2012
             | 
            
                -0.10 / -0.74%
             |             
            
                13.50
             |           
            
                13.60
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                13.60
             |               
            
                12.60
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                22,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2012
             | 
            
                +0.10 / +0.75%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                22,755
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.60
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                22,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.20
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                49,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.00
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.80
             |                                 
            
                7,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |