| 
                 
                    Closing price on 7/18/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.70 | 
                 
                
                    | High | 
                    6.80 | 
                 
                
                    | Low | 
                    6.50 | 
                     
                
                    | Volume | 
                    25,320 | 
                                 
                
                    | Split-adjusted Price | 
                    3.24 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                25,320
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2012
             | 
            
                +0.10 / +1.49%
             |             
            
                6.50
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                43,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2012
             | 
            
                +0.20 / +3.08%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                3.19
             |                                 
            
                13,190
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2012
             | 
            
                +0.10 / +1.56%
             |             
            
                6.40
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                3.09
             |                                 
            
                39,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2012
             | 
            
                +0.20 / +3.23%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.00
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                3.05
             |                                 
            
                5,270
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2012
             | 
            
                +0.10 / +1.64%
             |             
            
                6.10
             |           
            
                6.20
             |               
            
                6.00
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                2.95
             |                                 
            
                15,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2012
             | 
            
                +0.10 / +1.67%
             |             
            
                5.90
             |           
            
                6.20
             |               
            
                5.70
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                2.90
             |                                 
            
                15,530
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2012
             | 
            
                -0.10 / -1.64%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                2.86
             |                                 
            
                10,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2012
             | 
            
                +0.20 / +3.39%
             |             
            
                5.80
             |           
            
                6.10
             |               
            
                5.80
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                2.90
             |                                 
            
                19,190
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2012
             | 
            
                -0.30 / -4.84%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.81
             |                                 
            
                910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                6.20
             |               
            
                5.90
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                2.95
             |                                 
            
                54,540
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2012
             | 
            
                -0.30 / -4.62%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                2.95
             |                                 
            
                1,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2012
             | 
            
                +0.10 / +1.56%
             |             
            
                6.60
             |           
            
                6.60
             |               
            
                6.10
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                3.09
             |                                 
            
                6,370
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2012
             | 
            
                -0.30 / -4.48%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                3.05
             |                                 
            
                10,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                3.19
             |                                 
            
                8,220
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2012
             | 
            
                +0.20 / +3.08%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.20
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                3.19
             |                                 
            
                2,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2012
             | 
            
                -0.30 / -4.41%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                3.09
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                6,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                20,770
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.80
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                8,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2012
             | 
            
                -0.30 / -4.23%
             |             
            
                6.80
             |           
            
                6.90
             |               
            
                6.80
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                16,170
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2012
             | 
            
                -0.10 / -1.39%
             |             
            
                7.00
             |           
            
                7.10
             |               
            
                6.90
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                3.38
             |                                 
            
                10,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2012
             | 
            
                +0.20 / +2.86%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                3.43
             |                                 
            
                23,550
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2012
             | 
            
                +0.20 / +2.94%
             |             
            
                6.60
             |           
            
                7.00
             |               
            
                6.60
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                3.33
             |                                 
            
                17,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2012
             | 
            
                -0.20 / -2.86%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                3.24
             |                                 
            
                16,550
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.20
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                3.33
             |                                 
            
                37,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2012
             | 
            
                -0.30 / -4.11%
             |             
            
                7.10
             |           
            
                7.20
             |               
            
                7.00
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                3.33
             |                                 
            
                11,060
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2012
             | 
            
                -0.10 / -1.35%
             |             
            
                7.20
             |           
            
                7.40
             |               
            
                7.20
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                3.48
             |                                 
            
                19,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.30
             |           
            
                7.50
             |               
            
                7.10
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                3.52
             |                                 
            
                10,970
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2012
             | 
            
                +0.30 / +4.23%
             |             
            
                7.20
             |           
            
                7.40
             |               
            
                7.20
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                3.52
             |                                 
            
                33,670
             |  
            
                 
             |                                                              
             
    
         
    
    
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