| 
                 
                    Closing price on 11/5/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    9.40 | 
                 
                
                    | Low | 
                    8.70 | 
                     
                
                    | Volume | 
                    12,200 | 
                                 
                
                    | Split-adjusted Price | 
                    5.92 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/5/2010
             | 
            
                +0.40 / +4.44%
             |             
            
                8.70
             |           
            
                9.40
             |               
            
                8.70
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                5.92
             |                                 
            
                12,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2010
             | 
            
                +0.10 / +1.12%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                5.66
             |                                 
            
                10,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/3/2010
             | 
            
                0.00 / 0.00%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                5.60
             |                                 
            
                14,710
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2010
             | 
            
                -0.20 / -2.20%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                5.60
             |                                 
            
                22,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/1/2010
             | 
            
                -0.10 / -1.09%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                5.73
             |                                 
            
                37,320
             |            
            
                 
             |                                       
         
    
        
            | 
                10/29/2010
             | 
            
                +0.20 / +2.22%
             |             
            
                9.00
             |           
            
                9.20
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                5.79
             |                                 
            
                25,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/28/2010
             | 
            
                -0.30 / -3.23%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                5.66
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/27/2010
             | 
            
                -0.10 / -1.06%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.30
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                5.85
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/26/2010
             | 
            
                +0.10 / +1.08%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.10
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                5.92
             |                                 
            
                23,550
             |            
            
                 
             |                                       
         
    
        
            | 
                10/25/2010
             | 
            
                -0.40 / -4.12%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                9.30
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                5.85
             |                                 
            
                38,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/22/2010
             | 
            
                -0.20 / -2.02%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                6.11
             |                                 
            
                38,580
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2010
             | 
            
                -0.10 / -1.00%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.23
             |                                 
            
                23,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/20/2010
             | 
            
                -0.20 / -1.96%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                9.80
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                6.29
             |                                 
            
                34,080
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2010
             | 
            
                +0.10 / +0.99%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                48,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                21,450
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2010
             | 
            
                -0.10 / -0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.36
             |                                 
            
                17,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2010
             | 
            
                -0.10 / -0.97%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                22,220
             |            
            
                 
             |                                       
         
    
        
            | 
                10/13/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.40
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                14,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/12/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                40,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2010
             | 
            
                +0.10 / +0.97%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.30
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                6,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2010
             | 
            
                -0.10 / -0.96%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.48
             |                                 
            
                20,110
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2010
             | 
            
                -0.10 / -0.95%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.30
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                27,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2010
             | 
            
                +0.30 / +2.94%
             |             
            
                10.30
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.61
             |                                 
            
                26,130
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2010
             | 
            
                +0.20 / +2.00%
             |             
            
                10.00
             |           
            
                10.20
             |               
            
                10.00
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.42
             |                                 
            
                23,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2010
             | 
            
                -0.40 / -3.85%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                6.29
             |                                 
            
                62,380
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2010
             | 
            
                -0.10 / -0.95%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.55
             |                                 
            
                14,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2010
             | 
            
                0.00 / 0.00%
             |             
            
                10.50
             |           
            
                10.90
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.61
             |                                 
            
                43,250
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2010
             | 
            
                -0.30 / -2.78%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.61
             |                                 
            
                31,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2010
             | 
            
                +0.10 / +0.93%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.60
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                6.80
             |                                 
            
                63,020
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2010
             | 
            
                -0.10 / -0.93%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                6.73
             |                                 
            
                23,710
             |  
            
                 
             |                                                              
             
    
         
    
    
 |