| 
                 
                    Closing price on 5/18/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.00 | 
                 
                
                    | High | 
                    8.30 | 
                 
                
                    | Low | 
                    7.70 | 
                     
                
                    | Volume | 
                    26,090 | 
                                 
                
                    | Split-adjusted Price | 
                    4.73 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VNA Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/18/2011
             | 
            
                +0.20 / +2.47%
             |             
            
                8.00
             |           
            
                8.30
             |               
            
                7.70
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                4.73
             |                                 
            
                26,090
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2011
             | 
            
                -0.30 / -3.57%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                4.62
             |                                 
            
                255,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2011
             | 
            
                -0.30 / -3.45%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.30
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                4.79
             |                                 
            
                14,830
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2011
             | 
            
                +0.20 / +2.35%
             |             
            
                8.20
             |           
            
                8.70
             |               
            
                8.20
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                4.96
             |                                 
            
                550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2011
             | 
            
                -0.10 / -1.16%
             |             
            
                8.50
             |           
            
                8.50
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                4.84
             |                                 
            
                1,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2011
             | 
            
                -0.20 / -2.27%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                8.50
             |                           
            
                8.60
             | 
            
                8.60
             |                     
            
                4.90
             |                                 
            
                3,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2011
             | 
            
                -0.10 / -1.12%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                5,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2011
             | 
            
                -0.20 / -2.20%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                5.07
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2011
             | 
            
                +0.20 / +2.25%
             |             
            
                9.00
             |           
            
                9.10
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                5.19
             |                                 
            
                5,080
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2011
             | 
            
                +0.10 / +1.14%
             |             
            
                8.80
             |           
            
                8.90
             |               
            
                8.60
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                5.07
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                9.00
             |               
            
                8.60
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                3,120
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                5,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2011
             | 
            
                -1.40 / -13.73%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.01
             |                                 
            
                8,770
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2011
             | 
            
                +0.40 / +4.08%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                5.81
             |                                 
            
                16,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2011
             | 
            
                -0.10 / -1.01%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                5.58
             |                                 
            
                710
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2011
             | 
            
                -0.10 / -1.00%
             |             
            
                10.10
             |           
            
                10.10
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                5.64
             |                                 
            
                14,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2011
             | 
            
                -0.10 / -0.99%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                5.70
             |                                 
            
                4,940
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.10
             |           
            
                10.10
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                5.76
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2011
             | 
            
                -0.20 / -1.94%
             |             
            
                10.10
             |           
            
                10.10
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                5.76
             |                                 
            
                12,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                5.87
             |                                 
            
                5,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                5.87
             |                                 
            
                15,010
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.10
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                5.87
             |                                 
            
                9,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                5.87
             |                                 
            
                21,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2011
             | 
            
                -0.20 / -1.90%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                5.87
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2011
             | 
            
                +0.30 / +2.94%
             |             
            
                10.30
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                5.98
             |                                 
            
                17,060
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2011
             | 
            
                -0.20 / -1.92%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                5.81
             |                                 
            
                13,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2011
             | 
            
                -0.10 / -0.95%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                5.93
             |                                 
            
                10,940
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2011
             | 
            
                -0.40 / -3.67%
             |             
            
                10.40
             |           
            
                10.90
             |               
            
                10.40
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                5.98
             |                                 
            
                15,430
             |  
            
                 
             |                                                              
             
    
         
    
    
 |