| 
                 
                    Closing price on 1/28/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    57.50 | 
                 
                
                    | High | 
                    57.50 | 
                 
                
                    | Low | 
                    57.50 | 
                     
                
                    | Volume | 
                    4,330 | 
                                 
                
                    | Split-adjusted Price | 
                    15.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BT6 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/28/2010
             | 
            
                -3.00 / -4.96%
             |             
            
                57.50
             |           
            
                57.50
             |               
            
                57.50
             |                           
            
                57.50
             | 
            
                57.50
             |                     
            
                15.19
             |                                 
            
                4,330
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2010
             | 
            
                0.00 / 0.00%
             |             
            
                60.50
             |           
            
                60.50
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                15.99
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2010
             | 
            
                0.00 / 0.00%
             |             
            
                57.50
             |           
            
                60.50
             |               
            
                57.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                15.99
             |                                 
            
                1,170
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2010
             | 
            
                +2.50 / +4.31%
             |             
            
                60.50
             |           
            
                60.50
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                15.99
             |                                 
            
                210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2010
             | 
            
                -2.00 / -3.33%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                15.32
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2010
             | 
            
                -3.00 / -4.76%
             |             
            
                60.00
             |           
            
                60.00
             |               
            
                60.00
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                15.85
             |                                 
            
                1,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2010
             | 
            
                +2.00 / +3.28%
             |             
            
                62.00
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                63.00
             | 
            
                63.00
             |                     
            
                16.65
             |                                 
            
                2,310
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2010
             | 
            
                +2.50 / +4.27%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                16.12
             |                                 
            
                11,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2010
             | 
            
                -3.00 / -4.88%
             |             
            
                58.50
             |           
            
                58.50
             |               
            
                58.50
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                15.46
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2010
             | 
            
                0.00 / 0.00%
             |             
            
                59.00
             |           
            
                61.50
             |               
            
                59.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                4,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2010
             | 
            
                0.00 / 0.00%
             |             
            
                61.50
             |           
            
                61.50
             |               
            
                61.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                730
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2010
             | 
            
                0.00 / 0.00%
             |             
            
                60.00
             |           
            
                61.50
             |               
            
                58.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                7,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2010
             | 
            
                -0.50 / -0.81%
             |             
            
                59.50
             |           
            
                61.50
             |               
            
                59.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                2,390
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2010
             | 
            
                0.00 / 0.00%
             |             
            
                59.50
             |           
            
                62.00
             |               
            
                59.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                16.38
             |                                 
            
                3,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2010
             | 
            
                +0.50 / +0.81%
             |             
            
                61.50
             |           
            
                62.00
             |               
            
                59.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                16.38
             |                                 
            
                2,060
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2010
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                61.50
             |               
            
                59.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2010
             | 
            
                +2.00 / +3.36%
             |             
            
                60.00
             |           
            
                61.50
             |               
            
                60.00
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                16.25
             |                                 
            
                680
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2010
             | 
            
                -2.50 / -4.03%
             |             
            
                62.00
             |           
            
                63.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                15.72
             |                                 
            
                3,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2010
             | 
            
                0.00 / 0.00%
             |             
            
                62.00
             |           
            
                64.50
             |               
            
                62.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                16.38
             |                                 
            
                170
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2009
             | 
            
                +2.00 / +3.33%
             |             
            
                60.00
             |           
            
                62.00
             |               
            
                59.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                16.38
             |                                 
            
                4,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2009
             | 
            
                +1.00 / +1.69%
             |             
            
                57.00
             |           
            
                60.00
             |               
            
                56.50
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                15.85
             |                                 
            
                2,030
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2009
             | 
            
                -3.00 / -4.84%
             |             
            
                59.00
             |           
            
                59.00
             |               
            
                59.00
             |                           
            
                59.00
             | 
            
                59.00
             |                     
            
                15.59
             |                                 
            
                2,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2009
             | 
            
                +1.00 / +1.64%
             |             
            
                61.00
             |           
            
                62.00
             |               
            
                61.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                16.38
             |                                 
            
                1,680
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2009
             | 
            
                +1.00 / +1.67%
             |             
            
                58.00
             |           
            
                62.00
             |               
            
                58.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                16.12
             |                                 
            
                5,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2009
             | 
            
                +1.00 / +1.69%
             |             
            
                57.00
             |           
            
                60.00
             |               
            
                57.00
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                15.85
             |                                 
            
                520
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2009
             | 
            
                +0.50 / +0.85%
             |             
            
                56.50
             |           
            
                59.00
             |               
            
                56.00
             |                           
            
                59.00
             | 
            
                59.00
             |                     
            
                15.59
             |                                 
            
                2,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2009
             | 
            
                +1.50 / +2.63%
             |             
            
                57.00
             |           
            
                59.00
             |               
            
                56.00
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                15.46
             |                                 
            
                1,960
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2009
             | 
            
                +2.50 / +4.59%
             |             
            
                57.00
             |           
            
                57.00
             |               
            
                56.50
             |                           
            
                57.00
             | 
            
                57.00
             |                     
            
                15.06
             |                                 
            
                550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2009
             | 
            
                +2.50 / +4.81%
             |             
            
                54.00
             |           
            
                54.50
             |               
            
                54.00
             |                           
            
                54.50
             | 
            
                54.50
             |                     
            
                14.40
             |                                 
            
                1,570
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2009
             | 
            
                +2.00 / +4.00%
             |             
            
                49.00
             |           
            
                52.00
             |               
            
                49.00
             |                           
            
                52.00
             | 
            
                52.00
             |                     
            
                13.74
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |