| 
                 
                    Closing price on 12/15/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.40 | 
                 
                
                    | High | 
                    6.40 | 
                 
                
                    | Low | 
                    6.40 | 
                     
                
                    | Volume | 
                    8,000 | 
                                 
                
                    | Split-adjusted Price | 
                    4.13 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/15/2011
             | 
            
                -0.30 / -4.48%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2011
             | 
            
                +0.20 / +3.08%
             |             
            
                6.20
             |           
            
                6.70
             |               
            
                6.20
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                7,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                1,940
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                2,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                1,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2011
             | 
            
                +0.20 / +3.17%
             |             
            
                6.00
             |           
            
                6.50
             |               
            
                6.00
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                1,330
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2011
             | 
            
                -0.30 / -4.55%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                2,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2011
             | 
            
                +0.30 / +4.76%
             |             
            
                6.30
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                4.26
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2011
             | 
            
                +0.30 / +5.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.87
             |                                 
            
                660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2011
             | 
            
                +0.10 / +1.69%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.87
             |                                 
            
                4,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2011
             | 
            
                -0.10 / -1.67%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                31,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2011
             | 
            
                +0.10 / +1.69%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.87
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2011
             | 
            
                -0.10 / -1.67%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                6,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2011
             | 
            
                +0.10 / +1.69%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.87
             |                                 
            
                390
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2011
             | 
            
                +0.10 / +1.72%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                8,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                3.74
             |                                 
            
                20,950
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2011
             | 
            
                -0.20 / -3.33%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                3.74
             |                                 
            
                9,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/11/2011
             | 
            
                -0.10 / -1.64%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.87
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.93
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2011
             | 
            
                +0.20 / +3.39%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.93
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                90
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                89,350
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |