| 
                 
                    Closing price on 5/17/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.00 | 
                 
                
                    | High | 
                    21.50 | 
                 
                
                    | Low | 
                    20.00 | 
                     
                
                    | Volume | 
                    42,000 | 
                                 
                
                    | Split-adjusted Price | 
                    2.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DBT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/17/2011
             | 
            
                +0.50 / +2.38%
             |             
            
                20.00
             |           
            
                21.50
             |               
            
                20.00
             |                           
            
                21.50
             | 
            
                21.43
             |                     
            
                2.20
             |                                 
            
                42,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                2.15
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2011
             | 
            
                -0.50 / -2.33%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                2.15
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2011
             | 
            
                +0.50 / +2.38%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                6,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2011
             | 
            
                -0.20 / -0.94%
             |             
            
                21.20
             |           
            
                21.20
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.02
             |                     
            
                2.15
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2011
             | 
            
                -0.30 / -1.40%
             |             
            
                21.00
             |           
            
                21.20
             |               
            
                21.00
             |                           
            
                21.20
             | 
            
                21.09
             |                     
            
                2.17
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2011
             | 
            
                -0.50 / -2.27%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                65,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2011
             | 
            
                +0.10 / +0.46%
             |             
            
                22.00
             |           
            
                22.00
             |               
            
                22.00
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                2.25
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.90
             |           
            
                21.90
             |               
            
                21.90
             |                           
            
                21.90
             | 
            
                21.90
             |                     
            
                2.24
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2011
             | 
            
                +0.40 / +1.86%
             |             
            
                21.90
             |           
            
                21.90
             |               
            
                21.90
             |                           
            
                21.90
             | 
            
                21.90
             |                     
            
                2.24
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2011
             | 
            
                -1.00 / -4.44%
             |             
            
                22.00
             |           
            
                22.00
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.88
             |                     
            
                2.20
             |                                 
            
                6,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2011
             | 
            
                -1.50 / -6.25%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                2.30
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2011
             | 
            
                +1.10 / +4.80%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                24.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                2.45
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2011
             | 
            
                +1.40 / +6.51%
             |             
            
                22.90
             |           
            
                22.90
             |               
            
                22.90
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                2.34
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2011
             | 
            
                -1.50 / -6.52%
             |             
            
                21.40
             |           
            
                21.50
             |               
            
                21.40
             |                           
            
                21.50
             | 
            
                21.45
             |                     
            
                2.20
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2011
             | 
            
                +1.50 / +6.98%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                2.35
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2011
             | 
            
                -0.50 / -2.27%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.20
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2011
             | 
            
                -0.50 / -2.22%
             |             
            
                22.00
             |           
            
                22.00
             |               
            
                22.00
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                2.25
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                2.30
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                2.30
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2011
             | 
            
                -1.50 / -6.25%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                2.30
             |                                 
            
                64,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                24.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                2.45
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2011
             | 
            
                +1.50 / +6.67%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                24.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                2.45
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2011
             | 
            
                -1.40 / -5.86%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                2.30
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2011
             | 
            
                -0.10 / -0.42%
             |             
            
                23.90
             |           
            
                23.90
             |               
            
                23.90
             |                           
            
                23.90
             | 
            
                23.90
             |                     
            
                2.44
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2011
             | 
            
                +2.50 / +11.63%
             |             
            
                21.50
             |           
            
                24.00
             |               
            
                21.50
             |                           
            
                24.00
             | 
            
                23.90
             |                     
            
                2.45
             |                                 
            
                10,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |