| 
                 
                    Closing price on 3/12/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.80 | 
                 
                
                    | High | 
                    6.80 | 
                 
                
                    | Low | 
                    6.50 | 
                     
                
                    | Volume | 
                    20 | 
                                 
                
                    | Split-adjusted Price | 
                    4.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/12/2013
             | 
            
                +0.10 / +1.56%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                70
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                30
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                70
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2013
             | 
            
                -0.30 / -4.48%
             |             
            
                6.30
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.13
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2013
             | 
            
                +0.20 / +3.08%
             |             
            
                6.50
             |           
            
                6.70
             |               
            
                6.10
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                2,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.50
             |               
            
                6.10
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                1,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2013
             | 
            
                +0.30 / +4.84%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                4.19
             |                                 
            
                1,010
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2013
             | 
            
                +0.40 / +6.90%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.80
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.00
             |                                 
            
                1,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2013
             | 
            
                +0.30 / +5.45%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                3.74
             |                                 
            
                50
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                3.55
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/7/2013
             | 
            
                -0.40 / -6.78%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                3.55
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/6/2013
             | 
            
                -0.40 / -6.35%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                2,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2013
             | 
            
                +0.40 / +6.78%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2013
             | 
            
                -0.40 / -6.35%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                3.81
             |                                 
            
                1,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2013
             | 
            
                -0.40 / -5.97%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.06
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2013
             | 
            
                -0.50 / -6.94%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                4.32
             |                                 
            
                80
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2013
             | 
            
                -0.50 / -6.49%
             |             
            
                7.20
             |           
            
                7.20
             |               
            
                7.20
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                4.64
             |                                 
            
                2,060
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2013
             | 
            
                0.00 / 0.00%
             |             
            
                7.20
             |           
            
                7.70
             |               
            
                7.20
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                4.97
             |                                 
            
                830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2013
             | 
            
                0.00 / 0.00%
             |             
            
                7.70
             |           
            
                7.70
             |               
            
                7.70
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                4.97
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2013
             | 
            
                +0.40 / +5.48%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.70
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                4.97
             |                                 
            
                20
             |  
            
                 
             |                                                              
             
    
         
    
    
 |