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                    Closing price on 8/8/2011
                 
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                    | Open | 
                    15.30 | 
                 
                
                    | High | 
                    15.50 | 
                 
                
                    | Low | 
                    14.50 | 
                     
                
                    | Volume | 
                    1,108,400 | 
                                 
                
                    | Split-adjusted Price | 
                    10.44 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/8/2011
             | 
            
                -0.80 / -5.19%
             |             
            
                15.30
             |           
            
                15.50
             |               
            
                14.50
             |                           
            
                14.60
             | 
            
                14.86
             |                     
            
                10.44
             |                                 
            
                1,108,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2011
             | 
            
                +0.60 / +4.05%
             |             
            
                14.90
             |           
            
                15.60
             |               
            
                14.50
             |                           
            
                15.40
             | 
            
                15.29
             |                     
            
                11.02
             |                                 
            
                1,910,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2011
             | 
            
                +0.50 / +3.50%
             |             
            
                14.60
             |           
            
                14.80
             |               
            
                14.20
             |                           
            
                14.80
             | 
            
                14.60
             |                     
            
                10.59
             |                                 
            
                734,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2011
             | 
            
                +0.50 / +3.62%
             |             
            
                13.60
             |           
            
                14.30
             |               
            
                13.30
             |                           
            
                14.30
             | 
            
                13.91
             |                     
            
                10.23
             |                                 
            
                541,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2011
             | 
            
                -0.40 / -2.82%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                13.50
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                9.87
             |                                 
            
                755,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2011
             | 
            
                -0.40 / -2.74%
             |             
            
                14.40
             |           
            
                14.60
             |               
            
                14.00
             |                           
            
                14.20
             | 
            
                14.23
             |                     
            
                10.16
             |                                 
            
                508,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2011
             | 
            
                -0.30 / -2.01%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.30
             |                           
            
                14.60
             | 
            
                14.57
             |                     
            
                10.44
             |                                 
            
                710,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                14.90
             |           
            
                15.30
             |               
            
                14.80
             |                           
            
                14.90
             | 
            
                15.00
             |                     
            
                10.66
             |                                 
            
                320,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2011
             | 
            
                +0.20 / +1.36%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.60
             |                           
            
                14.90
             | 
            
                14.76
             |                     
            
                10.66
             |                                 
            
                492,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2011
             | 
            
                +0.10 / +0.68%
             |             
            
                14.60
             |           
            
                15.10
             |               
            
                14.60
             |                           
            
                14.70
             | 
            
                14.80
             |                     
            
                10.52
             |                                 
            
                487,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2011
             | 
            
                -0.20 / -1.35%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.60
             |                           
            
                14.60
             | 
            
                14.68
             |                     
            
                10.44
             |                                 
            
                432,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2011
             | 
            
                -0.20 / -1.33%
             |             
            
                15.10
             |           
            
                15.20
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.92
             |                     
            
                10.59
             |                                 
            
                301,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/21/2011
             | 
            
                -0.50 / -3.23%
             |             
            
                15.50
             |           
            
                15.70
             |               
            
                15.00
             |                           
            
                15.00
             | 
            
                15.31
             |                     
            
                10.73
             |                                 
            
                713,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2011
             | 
            
                +0.80 / +5.44%
             |             
            
                14.60
             |           
            
                15.60
             |               
            
                14.60
             |                           
            
                15.50
             | 
            
                15.13
             |                     
            
                11.09
             |                                 
            
                631,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2011
             | 
            
                -0.20 / -1.34%
             |             
            
                14.90
             |           
            
                14.90
             |               
            
                14.60
             |                           
            
                14.70
             | 
            
                14.71
             |                     
            
                10.52
             |                                 
            
                472,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2011
             | 
            
                -0.10 / -0.67%
             |             
            
                14.90
             |           
            
                15.10
             |               
            
                14.70
             |                           
            
                14.90
             | 
            
                14.89
             |                     
            
                10.66
             |                                 
            
                403,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/15/2011
             | 
            
                -0.40 / -2.60%
             |             
            
                15.60
             |           
            
                15.70
             |               
            
                15.00
             |                           
            
                15.00
             | 
            
                15.19
             |                     
            
                10.73
             |                                 
            
                339,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.30
             |           
            
                15.70
             |               
            
                14.90
             |                           
            
                15.40
             | 
            
                15.28
             |                     
            
                11.02
             |                                 
            
                379,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2011
             | 
            
                +0.10 / +0.65%
             |             
            
                15.50
             |           
            
                15.70
             |               
            
                15.10
             |                           
            
                15.40
             | 
            
                15.48
             |                     
            
                11.02
             |                                 
            
                838,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2011
             | 
            
                +0.50 / +3.38%
             |             
            
                14.50
             |           
            
                15.50
             |               
            
                14.40
             |                           
            
                15.30
             | 
            
                14.79
             |                     
            
                10.94
             |                                 
            
                879,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/11/2011
             | 
            
                -0.60 / -3.90%
             |             
            
                15.30
             |           
            
                15.30
             |               
            
                14.70
             |                           
            
                14.80
             | 
            
                14.93
             |                     
            
                10.59
             |                                 
            
                437,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/8/2011
             | 
            
                -0.10 / -0.65%
             |             
            
                15.40
             |           
            
                15.60
             |               
            
                15.20
             |                           
            
                15.40
             | 
            
                15.37
             |                     
            
                11.02
             |                                 
            
                717,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/7/2011
             | 
            
                -0.20 / -1.27%
             |             
            
                15.70
             |           
            
                16.10
             |               
            
                15.40
             |                           
            
                15.50
             | 
            
                15.71
             |                     
            
                11.09
             |                                 
            
                663,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2011
             | 
            
                +0.20 / +1.29%
             |             
            
                16.50
             |           
            
                16.50
             |               
            
                15.40
             |                           
            
                15.70
             | 
            
                15.98
             |                     
            
                11.23
             |                                 
            
                1,602,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2011
             | 
            
                +0.60 / +4.03%
             |             
            
                15.10
             |           
            
                15.50
             |               
            
                15.10
             |                           
            
                15.50
             | 
            
                15.47
             |                     
            
                11.09
             |                                 
            
                319,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2011
             | 
            
                +0.60 / +4.20%
             |             
            
                14.40
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                14.90
             | 
            
                14.53
             |                     
            
                10.66
             |                                 
            
                587,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/1/2011
             | 
            
                -0.50 / -3.38%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                14.30
             | 
            
                14.40
             |                     
            
                10.23
             |                                 
            
                851,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/30/2011
             | 
            
                -0.40 / -2.63%
             |             
            
                15.00
             |           
            
                15.40
             |               
            
                14.70
             |                           
            
                14.80
             | 
            
                14.93
             |                     
            
                10.59
             |                                 
            
                806,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2011
             | 
            
                +0.10 / +0.66%
             |             
            
                15.20
             |           
            
                15.50
             |               
            
                14.50
             |                           
            
                15.20
             | 
            
                14.91
             |                     
            
                10.87
             |                                 
            
                814,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2011
             | 
            
                -1.00 / -6.21%
             |             
            
                15.90
             |           
            
                16.10
             |               
            
                15.00
             |                           
            
                15.10
             | 
            
                15.17
             |                     
            
                10.80
             |                                 
            
                1,490,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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 Market Update 
        
            
                Last updated at 3:10:02 PM
                                                                
            
            
            
            
        
        
     
 
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