| 
                 
                    Closing price on 9/17/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.70 | 
                 
                
                    | High | 
                    4.80 | 
                 
                
                    | Low | 
                    4.40 | 
                     
                
                    | Volume | 
                    17,620 | 
                                 
                
                    | Split-adjusted Price | 
                    2.29 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/17/2012
             | 
            
                +0.20 / +4.35%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.40
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.29
             |                                 
            
                17,620
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2012
             | 
            
                -0.20 / -4.17%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                2.19
             |                                 
            
                56,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2012
             | 
            
                +0.20 / +4.35%
             |             
            
                4.40
             |           
            
                4.80
             |               
            
                4.40
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.29
             |                                 
            
                21,580
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2012
             | 
            
                -0.20 / -4.17%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                2.19
             |                                 
            
                35,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2012
             | 
            
                -0.20 / -4.00%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.29
             |                                 
            
                15,650
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2012
             | 
            
                -0.20 / -3.85%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                2.38
             |                                 
            
                13,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2012
             | 
            
                -0.20 / -3.70%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                2.48
             |                                 
            
                23,140
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                12,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                7,760
             |            
            
                 
             |                                       
         
    
        
            | 
                9/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                16,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2012
             | 
            
                -0.10 / -1.82%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                440
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2012
             | 
            
                +0.10 / +1.85%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                2.62
             |                                 
            
                8,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2012
             | 
            
                +0.10 / +1.89%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                17,420
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2012
             | 
            
                -0.10 / -1.85%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                2.52
             |                                 
            
                1,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                10,590
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2012
             | 
            
                +0.20 / +3.85%
             |             
            
                5.00
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                61,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2012
             | 
            
                -0.20 / -3.70%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                2.48
             |                                 
            
                7,140
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                35,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2012
             | 
            
                -0.20 / -3.57%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.57
             |                                 
            
                37,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2012
             | 
            
                -0.20 / -3.45%
             |             
            
                5.70
             |           
            
                6.00
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                2.67
             |                                 
            
                37,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2012
             | 
            
                -0.10 / -1.69%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                2.76
             |                                 
            
                12,140
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2012
             | 
            
                +0.10 / +1.72%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.81
             |                                 
            
                18,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2012
             | 
            
                +0.10 / +1.75%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                2.76
             |                                 
            
                29,460
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2012
             | 
            
                -0.30 / -5.00%
             |             
            
                5.70
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                2.71
             |                                 
            
                68,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2012
             | 
            
                -0.30 / -4.76%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                2.86
             |                                 
            
                22,080
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2012
             | 
            
                -0.30 / -4.55%
             |             
            
                6.60
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                3.00
             |                                 
            
                34,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.60
             |           
            
                6.60
             |               
            
                6.40
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                3.14
             |                                 
            
                5,420
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.60
             |               
            
                6.50
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                3.14
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2012
             | 
            
                +0.10 / +1.54%
             |             
            
                6.50
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                3.14
             |                                 
            
                25,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2012
             | 
            
                +0.10 / +1.56%
             |             
            
                6.40
             |           
            
                6.60
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                3.09
             |                                 
            
                24,910
             |  
            
                 
             |                                                              
             
    
         
    
    
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