| 
                 
                    Closing price on 3/19/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.60 | 
                 
                
                    | High | 
                    14.00 | 
                 
                
                    | Low | 
                    13.50 | 
                     
                
                    | Volume | 
                    53,100 | 
                                 
                
                    | Split-adjusted Price | 
                    1.83 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VCS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/19/2012
             | 
            
                -0.20 / -1.45%
             |             
            
                13.60
             |           
            
                14.00
             |               
            
                13.50
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                1.83
             |                                 
            
                53,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                +0.30 / +2.22%
             |             
            
                14.10
             |           
            
                14.20
             |               
            
                13.40
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                1.86
             |                                 
            
                124,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                +0.60 / +4.65%
             |             
            
                12.70
             |           
            
                13.50
             |               
            
                12.70
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                1.82
             |                                 
            
                277,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                +0.30 / +2.38%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.60
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                1.74
             |                                 
            
                65,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                -0.10 / -0.79%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.60
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                1.70
             |                                 
            
                138,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                -0.20 / -1.55%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                1.71
             |                                 
            
                31,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2012
             | 
            
                +0.20 / +1.57%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.70
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                1.74
             |                                 
            
                44,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2012
             | 
            
                -0.60 / -4.51%
             |             
            
                12.70
             |           
            
                13.00
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                1.71
             |                                 
            
                221,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2012
             | 
            
                -0.60 / -4.32%
             |             
            
                13.90
             |           
            
                14.00
             |               
            
                13.20
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                1.79
             |                                 
            
                324,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2012
             | 
            
                -0.10 / -0.71%
             |             
            
                14.90
             |           
            
                14.90
             |               
            
                13.40
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                1.87
             |                                 
            
                533,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2012
             | 
            
                +0.90 / +6.87%
             |             
            
                13.10
             |           
            
                14.00
             |               
            
                13.10
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                1.89
             |                                 
            
                575,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2012
             | 
            
                +0.80 / +6.50%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                13.00
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                1.76
             |                                 
            
                580,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2012
             | 
            
                +0.60 / +5.13%
             |             
            
                12.00
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                1.66
             |                                 
            
                188,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/29/2012
             | 
            
                +0.70 / +6.36%
             |             
            
                10.50
             |           
            
                11.70
             |               
            
                10.50
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                1.58
             |                                 
            
                253,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2012
             | 
            
                -2.40 / -17.91%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.70
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                1.48
             |                                 
            
                57,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2012
             | 
            
                +0.20 / +1.52%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.00
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                1.53
             |                                 
            
                285,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.30
             |           
            
                13.60
             |               
            
                13.00
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                1.51
             |                                 
            
                181,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2012
             | 
            
                +0.40 / +3.13%
             |             
            
                13.50
             |           
            
                13.60
             |               
            
                12.80
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                1.51
             |                                 
            
                192,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2012
             | 
            
                +0.80 / +6.67%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                1.46
             |                                 
            
                80,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2012
             | 
            
                +0.70 / +6.19%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                1.37
             |                                 
            
                38,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2012
             | 
            
                +0.60 / +5.61%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                1.29
             |                                 
            
                52,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2012
             | 
            
                +0.20 / +1.90%
             |             
            
                10.90
             |           
            
                11.00
             |               
            
                10.20
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                1.22
             |                                 
            
                15,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2012
             | 
            
                -0.10 / -0.94%
             |             
            
                10.30
             |           
            
                10.50
             |               
            
                10.00
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                1.20
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                1.21
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2012
             | 
            
                -0.20 / -1.85%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.20
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                1.21
             |                                 
            
                8,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2012
             | 
            
                -0.50 / -4.42%
             |             
            
                10.70
             |           
            
                11.80
             |               
            
                10.70
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                1.23
             |                                 
            
                11,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2012
             | 
            
                -0.20 / -1.74%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                1.29
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2012
             | 
            
                -0.90 / -7.26%
             |             
            
                11.80
             |           
            
                12.60
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                1.31
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2012
             | 
            
                +1.10 / +9.73%
             |             
            
                11.70
             |           
            
                12.40
             |               
            
                11.60
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                1.42
             |                                 
            
                10,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2012
             | 
            
                -0.70 / -5.83%
             |             
            
                12.70
             |           
            
                12.70
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                1.29
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |