| 
                 
                    Closing price on 6/17/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    16.20 | 
                 
                
                    | High | 
                    17.80 | 
                 
                
                    | Low | 
                    16.20 | 
                     
                
                    | Volume | 
                    158,410 | 
                                 
                
                    | Split-adjusted Price | 
                    8.62 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/17/2009
             | 
            
                +0.80 / +4.71%
             |             
            
                16.20
             |           
            
                17.80
             |               
            
                16.20
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                8.62
             |                                 
            
                158,410
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2009
             | 
            
                -0.80 / -4.49%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.24
             |                                 
            
                12,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2009
             | 
            
                -0.90 / -4.81%
             |             
            
                17.80
             |           
            
                17.80
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                8.62
             |                                 
            
                94,580
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2009
             | 
            
                +0.80 / +4.47%
             |             
            
                18.70
             |           
            
                18.70
             |               
            
                17.90
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                9.06
             |                                 
            
                244,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2009
             | 
            
                +0.80 / +4.68%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                8.67
             |                                 
            
                163,340
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2009
             | 
            
                -0.80 / -4.47%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                17.10
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                8.28
             |                                 
            
                101,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2009
             | 
            
                +0.80 / +4.68%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.00
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                8.67
             |                                 
            
                346,310
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2009
             | 
            
                +0.80 / +4.91%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                17.10
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                8.28
             |                                 
            
                8,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2009
             | 
            
                +0.70 / +4.49%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                16.30
             |                           
            
                16.30
             | 
            
                16.30
             |                     
            
                7.90
             |                                 
            
                11,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2009
             | 
            
                +0.70 / +4.70%
             |             
            
                15.60
             |           
            
                15.60
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                7.56
             |                                 
            
                9,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2009
             | 
            
                +0.70 / +4.93%
             |             
            
                14.90
             |           
            
                14.90
             |               
            
                14.90
             |                           
            
                14.90
             | 
            
                14.90
             |                     
            
                7.22
             |                                 
            
                25,320
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2009
             | 
            
                +0.60 / +4.41%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                14.20
             |                           
            
                14.20
             | 
            
                14.20
             |                     
            
                6.88
             |                                 
            
                22,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2009
             | 
            
                +0.60 / +4.62%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.60
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                6.59
             |                                 
            
                165,860
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2009
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                6.30
             |                                 
            
                43,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2009
             | 
            
                -0.30 / -2.26%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.70
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                6.30
             |                                 
            
                54,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2009
             | 
            
                -0.70 / -5.00%
             |             
            
                13.50
             |           
            
                14.00
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                6.44
             |                                 
            
                91,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2009
             | 
            
                +0.10 / +0.72%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                13.80
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                6.78
             |                                 
            
                88,530
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2009
             | 
            
                +0.60 / +4.51%
             |             
            
                13.30
             |           
            
                13.90
             |               
            
                12.70
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                6.73
             |                                 
            
                132,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2009
             | 
            
                +0.50 / +3.91%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                12.40
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                6.44
             |                                 
            
                360,630
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2009
             | 
            
                +0.60 / +4.92%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                6.20
             |                                 
            
                71,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2009
             | 
            
                +0.50 / +4.27%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                12.20
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                5.91
             |                                 
            
                33,770
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2009
             | 
            
                +0.50 / +4.46%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                5.67
             |                                 
            
                15,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2009
             | 
            
                +0.50 / +4.67%
             |             
            
                11.00
             |           
            
                11.20
             |               
            
                10.80
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                5.43
             |                                 
            
                83,260
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2009
             | 
            
                +0.40 / +3.88%
             |             
            
                10.50
             |           
            
                10.70
             |               
            
                10.30
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                5.18
             |                                 
            
                64,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2009
             | 
            
                +0.40 / +4.04%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.99
             |                                 
            
                29,290
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2009
             | 
            
                -0.50 / -4.81%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                4.80
             |                                 
            
                25,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2009
             | 
            
                +0.20 / +1.96%
             |             
            
                10.20
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                5.04
             |                                 
            
                19,920
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2009
             | 
            
                +0.20 / +2.00%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.00
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.94
             |                                 
            
                21,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2009
             | 
            
                +0.20 / +2.04%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                4.84
             |                                 
            
                8,830
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2009
             | 
            
                -0.60 / -5.77%
             |             
            
                9.80
             |           
            
                10.30
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                4.75
             |                                 
            
                29,570
             |  
            
                 
             |                                                              
             
    
         
    
    
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