| 
                 
                    Closing price on 3/12/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.20 | 
                 
                
                    | High | 
                    11.20 | 
                 
                
                    | Low | 
                    11.00 | 
                     
                
                    | Volume | 
                    24,350 | 
                                 
                
                    | Split-adjusted Price | 
                    6.92 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/12/2010
             | 
            
                +0.10 / +0.92%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                11.00
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                6.92
             |                                 
            
                24,350
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2010
             | 
            
                +0.50 / +4.81%
             |             
            
                10.40
             |           
            
                10.90
             |               
            
                10.40
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                6.86
             |                                 
            
                44,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2010
             | 
            
                +0.10 / +0.97%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                24,870
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2010
             | 
            
                +0.10 / +0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                32,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                13,490
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                15,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2010
             | 
            
                +0.10 / +0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                15,830
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.10
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                9,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                14,950
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                17,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2010
             | 
            
                +0.20 / +1.96%
             |             
            
                10.20
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                19,940
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2010
             | 
            
                +0.10 / +0.99%
             |             
            
                10.10
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                12,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.10
             |           
            
                10.20
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                14,570
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2010
             | 
            
                -0.20 / -1.94%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                9,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2010
             | 
            
                +0.10 / +0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                15,670
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                5,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                12,010
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2010
             | 
            
                +0.30 / +2.97%
             |             
            
                10.10
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                15,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2010
             | 
            
                -0.50 / -4.72%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                13,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2010
             | 
            
                -0.10 / -0.93%
             |             
            
                10.20
             |           
            
                10.60
             |               
            
                10.20
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.67
             |                                 
            
                22,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2010
             | 
            
                -0.40 / -3.60%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.73
             |                                 
            
                9,040
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2010
             | 
            
                0.00 / 0.00%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                11.00
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                6.99
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2010
             | 
            
                -0.10 / -0.89%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                11.10
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                6.99
             |                                 
            
                3,410
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2010
             | 
            
                -0.30 / -2.61%
             |             
            
                11.10
             |           
            
                11.20
             |               
            
                11.10
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                7.05
             |                                 
            
                2,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2010
             | 
            
                +0.40 / +3.60%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.24
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2010
             | 
            
                -0.20 / -1.77%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                11.10
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                6.99
             |                                 
            
                550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2010
             | 
            
                -0.20 / -1.74%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                7.11
             |                                 
            
                4,510
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2010
             | 
            
                0.00 / 0.00%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.30
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.24
             |                                 
            
                7,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2010
             | 
            
                +0.50 / +4.55%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.24
             |                                 
            
                60
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2010
             | 
            
                -0.20 / -1.79%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                11.00
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                6.92
             |                                 
            
                9,250
             |  
            
                 
             |                                                              
             
    
         
    
    
 |