| 
                 
                    Closing price on 7/4/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    22.50 | 
                 
                
                    | High | 
                    22.50 | 
                 
                
                    | Low | 
                    22.50 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    22.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VTS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2011
             | 
            
                +1.00 / +4.65%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2011
             | 
            
                -1.10 / -4.87%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                21.50
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2011
             | 
            
                -1.40 / -5.83%
             |             
            
                25.50
             |           
            
                25.50
             |               
            
                22.40
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                22.60
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2011
             | 
            
                +1.60 / +7.14%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                24.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                24.00
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2011
             | 
            
                -2.20 / -8.94%
             |             
            
                25.30
             |           
            
                25.30
             |               
            
                22.40
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                22.40
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2011
             | 
            
                +0.40 / +1.65%
             |             
            
                22.20
             |           
            
                24.60
             |               
            
                22.20
             |                           
            
                24.60
             | 
            
                24.60
             |                     
            
                24.60
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2011
             | 
            
                +1.10 / +4.76%
             |             
            
                24.30
             |           
            
                24.30
             |               
            
                23.00
             |                           
            
                24.20
             | 
            
                24.20
             |                     
            
                24.20
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2011
             | 
            
                -1.50 / -6.10%
             |             
            
                23.20
             |           
            
                23.30
             |               
            
                23.10
             |                           
            
                23.10
             | 
            
                23.10
             |                     
            
                23.10
             |                                 
            
                4,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2011
             | 
            
                +1.40 / +6.03%
             |             
            
                24.60
             |           
            
                24.60
             |               
            
                24.60
             |                           
            
                24.60
             | 
            
                24.60
             |                     
            
                24.60
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2011
             | 
            
                -0.20 / -0.85%
             |             
            
                23.10
             |           
            
                24.80
             |               
            
                23.10
             |                           
            
                23.20
             | 
            
                23.20
             |                     
            
                23.20
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2011
             | 
            
                +0.40 / +1.74%
             |             
            
                23.30
             |           
            
                25.00
             |               
            
                23.30
             |                           
            
                23.40
             | 
            
                23.40
             |                     
            
                23.40
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2011
             | 
            
                -1.00 / -4.17%
             |             
            
                22.30
             |           
            
                25.50
             |               
            
                22.30
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                23.00
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2011
             | 
            
                +1.50 / +6.67%
             |             
            
                23.80
             |           
            
                24.00
             |               
            
                23.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                24.00
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                22.50
             |               
            
                21.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2011
             | 
            
                -0.60 / -2.60%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                22.50
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2011
             | 
            
                +1.30 / +5.96%
             |             
            
                20.20
             |           
            
                23.10
             |               
            
                20.20
             |                           
            
                23.10
             | 
            
                23.10
             |                     
            
                23.10
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2011
             | 
            
                +0.80 / +3.81%
             |             
            
                19.00
             |           
            
                21.80
             |               
            
                19.00
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                21.80
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2011
             | 
            
                -9.60 / -31.37%
             |             
            
                18.90
             |           
            
                21.00
             |               
            
                18.90
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                21.00
             |                                 
            
                6,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2011
             | 
            
                +4.40 / +16.79%
             |             
            
                30.20
             |           
            
                30.60
             |               
            
                30.20
             |                           
            
                30.60
             | 
            
                30.60
             |                     
            
                30.60
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2011
             | 
            
                -2.30 / -8.07%
             |             
            
                26.40
             |           
            
                29.90
             |               
            
                26.20
             |                           
            
                26.20
             | 
            
                26.20
             |                     
            
                26.20
             |                                 
            
                6,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2011
             | 
            
                +1.40 / +5.17%
             |             
            
                25.50
             |           
            
                28.50
             |               
            
                25.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                28.50
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2011
             | 
            
                -1.50 / -5.24%
             |             
            
                26.90
             |           
            
                28.10
             |               
            
                26.90
             |                           
            
                27.10
             | 
            
                27.10
             |                     
            
                27.10
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2011
             | 
            
                -1.40 / -4.67%
             |             
            
                25.20
             |           
            
                28.60
             |               
            
                25.20
             |                           
            
                28.60
             | 
            
                28.60
             |                     
            
                28.60
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2011
             | 
            
                +2.10 / +7.53%
             |             
            
                26.80
             |           
            
                30.00
             |               
            
                26.70
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                30.00
             |                                 
            
                4,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2011
             | 
            
                -3.10 / -10.00%
             |             
            
                27.90
             |           
            
                31.90
             |               
            
                27.90
             |                           
            
                27.90
             | 
            
                27.90
             |                     
            
                27.90
             |                                 
            
                7,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2011
             | 
            
                -1.00 / -3.13%
             |             
            
                29.40
             |           
            
                31.00
             |               
            
                29.40
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                31.00
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |