| 
                 
                    Closing price on 4/11/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    25.80 | 
                 
                
                    | High | 
                    25.80 | 
                 
                
                    | Low | 
                    25.50 | 
                     
                
                    | Volume | 
                    4,000 | 
                                 
                
                    | Split-adjusted Price | 
                    10.81 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/11/2013
             | 
            
                -0.10 / -0.39%
             |             
            
                25.80
             |           
            
                25.80
             |               
            
                25.50
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                10.81
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2013
             | 
            
                +0.10 / +0.39%
             |             
            
                25.70
             |           
            
                25.70
             |               
            
                25.50
             |                           
            
                25.60
             | 
            
                25.60
             |                     
            
                10.85
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2013
             | 
            
                +0.50 / +2.00%
             |             
            
                25.50
             |           
            
                25.50
             |               
            
                25.50
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                10.81
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2013
             | 
            
                -0.10 / -0.40%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                25.00
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                10.60
             |                                 
            
                20
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2013
             | 
            
                +0.10 / +0.40%
             |             
            
                25.10
             |           
            
                25.10
             |               
            
                25.10
             |                           
            
                25.10
             | 
            
                25.10
             |                     
            
                10.64
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2013
             | 
            
                -0.50 / -1.96%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                25.00
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                10.60
             |                                 
            
                360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                25.50
             |           
            
                25.50
             |               
            
                25.50
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                10.81
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                25.10
             |           
            
                25.50
             |               
            
                25.10
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                10.81
             |                                 
            
                1,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2013
             | 
            
                -0.10 / -0.39%
             |             
            
                25.50
             |           
            
                25.50
             |               
            
                25.50
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                10.81
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2013
             | 
            
                -0.40 / -1.54%
             |             
            
                25.60
             |           
            
                25.60
             |               
            
                25.60
             |                           
            
                25.60
             | 
            
                25.60
             |                     
            
                10.85
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2013
             | 
            
                +0.20 / +0.78%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                26.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                11.02
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2013
             | 
            
                -0.20 / -0.77%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                25.70
             |                           
            
                25.80
             | 
            
                25.80
             |                     
            
                10.93
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                25.60
             |           
            
                26.00
             |               
            
                25.60
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                11.02
             |                                 
            
                5,570
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2013
             | 
            
                0.00 / 0.00%
             |             
            
                25.60
             |           
            
                26.00
             |               
            
                25.60
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                11.02
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2013
             | 
            
                +1.50 / +6.12%
             |             
            
                25.00
             |           
            
                26.00
             |               
            
                25.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                11.02
             |                                 
            
                3,960
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2013
             | 
            
                0.00 / 0.00%
             |             
            
                24.10
             |           
            
                26.20
             |               
            
                24.10
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                10.38
             |                                 
            
                22,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2013
             | 
            
                0.00 / 0.00%
             |             
            
                24.50
             |           
            
                26.20
             |               
            
                24.00
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                10.38
             |                                 
            
                20,530
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2013
             | 
            
                +0.70 / +2.94%
             |             
            
                23.80
             |           
            
                24.50
             |               
            
                23.80
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                10.38
             |                                 
            
                2,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2013
             | 
            
                -0.20 / -0.83%
             |             
            
                23.80
             |           
            
                23.80
             |               
            
                23.20
             |                           
            
                23.80
             | 
            
                23.80
             |                     
            
                10.09
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2013
             | 
            
                +0.20 / +0.84%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                23.80
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                10.17
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2013
             | 
            
                +0.40 / +1.71%
             |             
            
                23.50
             |           
            
                23.80
             |               
            
                23.50
             |                           
            
                23.80
             | 
            
                23.80
             |                     
            
                10.09
             |                                 
            
                3,430
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2013
             | 
            
                +0.10 / +0.43%
             |             
            
                23.30
             |           
            
                23.60
             |               
            
                23.30
             |                           
            
                23.40
             | 
            
                23.40
             |                     
            
                9.92
             |                                 
            
                4,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2013
             | 
            
                -0.30 / -1.27%
             |             
            
                23.00
             |           
            
                23.50
             |               
            
                23.00
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                9.87
             |                                 
            
                2,760
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2013
             | 
            
                +0.10 / +0.43%
             |             
            
                23.50
             |           
            
                23.60
             |               
            
                23.50
             |                           
            
                23.60
             | 
            
                23.60
             |                     
            
                10.00
             |                                 
            
                820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2013
             | 
            
                +1.00 / +4.44%
             |             
            
                22.80
             |           
            
                23.50
             |               
            
                22.80
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                9.96
             |                                 
            
                510
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2013
             | 
            
                +0.20 / +0.90%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                9.54
             |                                 
            
                1,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                22.30
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                9.45
             |                                 
            
                1,220
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2013
             | 
            
                -0.20 / -0.89%
             |             
            
                22.30
             |           
            
                22.30
             |               
            
                22.30
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                9.45
             |                                 
            
                20
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2013
             | 
            
                -1.00 / -4.26%
             |             
            
                23.20
             |           
            
                23.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                9.54
             |                                 
            
                8,940
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2013
             | 
            
                +0.50 / +2.17%
             |             
            
                23.00
             |           
            
                23.50
             |               
            
                23.00
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                9.96
             |                                 
            
                4,030
             |  
            
                 
             |                                                              
             
    
         
    
    
 |