| 
                 
                    Closing price on 4/9/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.30 | 
                 
                
                    | High | 
                    10.30 | 
                 
                
                    | Low | 
                    10.20 | 
                     
                
                    | Volume | 
                    11,820 | 
                                 
                
                    | Split-adjusted Price | 
                    6.48 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                11,820
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                12,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                15,430
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                25,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2010
             | 
            
                +0.10 / +0.98%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                10,630
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                17,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2010
             | 
            
                +0.10 / +0.98%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                1,560
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.10
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                13,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                10,490
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2010
             | 
            
                +0.30 / +2.97%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                10,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2010
             | 
            
                -0.30 / -2.88%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                7,520
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                11,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2010
             | 
            
                +0.20 / +1.96%
             |             
            
                10.20
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                10,060
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                17,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                6,660
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                9,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2010
             | 
            
                +0.40 / +4.00%
             |             
            
                10.20
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                20,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2010
             | 
            
                -0.50 / -4.76%
             |             
            
                10.20
             |           
            
                10.50
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                6.29
             |                                 
            
                19,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2010
             | 
            
                -0.30 / -2.78%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.40
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.61
             |                                 
            
                24,430
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2010
             | 
            
                -0.20 / -1.82%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.80
             |                                 
            
                16,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
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