| 
                 
                    Closing price on 6/28/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    80.50 | 
                 
                
                    | High | 
                    80.50 | 
                 
                
                    | Low | 
                    80.50 | 
                     
                
                    | Volume | 
                    5,000 | 
                                 
                
                    | Split-adjusted Price | 
                    21.79 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BT6 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/28/2010
             | 
            
                +3.00 / +3.87%
             |             
            
                80.50
             |           
            
                80.50
             |               
            
                80.50
             |                           
            
                80.50
             | 
            
                80.50
             |                     
            
                21.79
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2010
             | 
            
                +2.00 / +2.65%
             |             
            
                77.50
             |           
            
                77.50
             |               
            
                77.50
             |                           
            
                77.50
             | 
            
                77.50
             |                     
            
                20.98
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2010
             | 
            
                -3.00 / -3.82%
             |             
            
                78.50
             |           
            
                78.50
             |               
            
                75.50
             |                           
            
                75.50
             | 
            
                75.50
             |                     
            
                20.44
             |                                 
            
                1,490
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2010
             | 
            
                -0.50 / -0.63%
             |             
            
                75.50
             |           
            
                78.50
             |               
            
                75.50
             |                           
            
                78.50
             | 
            
                78.50
             |                     
            
                21.25
             |                                 
            
                9,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2010
             | 
            
                +2.00 / +2.60%
             |             
            
                75.00
             |           
            
                80.00
             |               
            
                74.50
             |                           
            
                79.00
             | 
            
                79.00
             |                     
            
                21.39
             |                                 
            
                2,270
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2010
             | 
            
                0.00 / 0.00%
             |             
            
                77.50
             |           
            
                77.50
             |               
            
                77.00
             |                           
            
                77.00
             | 
            
                77.00
             |                     
            
                20.85
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2010
             | 
            
                -4.00 / -4.94%
             |             
            
                77.00
             |           
            
                77.00
             |               
            
                77.00
             |                           
            
                77.00
             | 
            
                77.00
             |                     
            
                20.85
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2010
             | 
            
                -4.00 / -4.71%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                21.93
             |                                 
            
                1,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2010
             | 
            
                +3.50 / +4.29%
             |             
            
                85.00
             |           
            
                85.00
             |               
            
                85.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                23.01
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2010
             | 
            
                0.00 / 0.00%
             |             
            
                81.50
             |           
            
                81.50
             |               
            
                81.50
             |                           
            
                81.50
             | 
            
                81.50
             |                     
            
                22.06
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2010
             | 
            
                +3.50 / +4.49%
             |             
            
                75.00
             |           
            
                81.50
             |               
            
                75.00
             |                           
            
                81.50
             | 
            
                81.50
             |                     
            
                22.06
             |                                 
            
                650
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2010
             | 
            
                -4.00 / -4.88%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                78.00
             |                           
            
                78.00
             | 
            
                78.00
             |                     
            
                21.12
             |                                 
            
                4,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2010
             | 
            
                -2.00 / -2.38%
             |             
            
                82.00
             |           
            
                82.00
             |               
            
                82.00
             |                           
            
                82.00
             | 
            
                82.00
             |                     
            
                22.20
             |                                 
            
                3,010
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                84.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2010
             | 
            
                0.00 / 0.00%
             |             
            
                80.00
             |           
            
                84.00
             |               
            
                80.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                3,120
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2010
             | 
            
                +3.00 / +3.70%
             |             
            
                81.00
             |           
            
                84.00
             |               
            
                81.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                2,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2010
             | 
            
                +1.00 / +1.25%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                21.93
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2010
             | 
            
                -4.00 / -4.76%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                80.00
             |                           
            
                80.00
             | 
            
                80.00
             |                     
            
                21.66
             |                                 
            
                5,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2010
             | 
            
                0.00 / 0.00%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                84.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2010
             | 
            
                -1.50 / -1.75%
             |             
            
                85.50
             |           
            
                85.50
             |               
            
                84.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                20
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2010
             | 
            
                -0.50 / -0.58%
             |             
            
                82.50
             |           
            
                85.50
             |               
            
                82.50
             |                           
            
                85.50
             | 
            
                85.50
             |                     
            
                23.15
             |                                 
            
                6,110
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2010
             | 
            
                +2.00 / +2.38%
             |             
            
                84.50
             |           
            
                86.00
             |               
            
                84.00
             |                           
            
                86.00
             | 
            
                86.00
             |                     
            
                23.28
             |                                 
            
                20,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2010
             | 
            
                +3.00 / +3.70%
             |             
            
                81.00
             |           
            
                84.00
             |               
            
                77.00
             |                           
            
                84.00
             | 
            
                84.00
             |                     
            
                22.74
             |                                 
            
                6,740
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2010
             | 
            
                +3.50 / +4.52%
             |             
            
                80.00
             |           
            
                81.00
             |               
            
                74.00
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                21.93
             |                                 
            
                36,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2010
             | 
            
                -0.50 / -0.64%
             |             
            
                77.00
             |           
            
                77.50
             |               
            
                77.00
             |                           
            
                77.50
             | 
            
                77.50
             |                     
            
                20.98
             |                                 
            
                1,150
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2010
             | 
            
                0.00 / 0.00%
             |             
            
                78.00
             |           
            
                78.00
             |               
            
                78.00
             |                           
            
                78.00
             | 
            
                78.00
             |                     
            
                21.12
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2010
             | 
            
                0.00 / 0.00%
             |             
            
                74.50
             |           
            
                78.00
             |               
            
                74.50
             |                           
            
                78.00
             | 
            
                78.00
             |                     
            
                21.12
             |                                 
            
                39,570
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2010
             | 
            
                +2.50 / +3.31%
             |             
            
                75.50
             |           
            
                78.00
             |               
            
                72.00
             |                           
            
                78.00
             | 
            
                78.00
             |                     
            
                21.12
             |                                 
            
                5,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2010
             | 
            
                -3.50 / -4.43%
             |             
            
                79.00
             |           
            
                80.00
             |               
            
                75.50
             |                           
            
                75.50
             | 
            
                75.50
             |                     
            
                20.44
             |                                 
            
                7,710
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2010
             | 
            
                +2.50 / +3.27%
             |             
            
                79.00
             |           
            
                79.00
             |               
            
                79.00
             |                           
            
                79.00
             | 
            
                79.00
             |                     
            
                21.39
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |