| 
                 
                    Closing price on 8/19/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    45.90 | 
                 
                
                    | High | 
                    45.90 | 
                 
                
                    | Low | 
                    43.90 | 
                     
                
                    | Volume | 
                    275,820 | 
                                 
                
                    | Split-adjusted Price | 
                    8.41 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/19/2010
             | 
            
                -1.30 / -2.85%
             |             
            
                45.90
             |           
            
                45.90
             |               
            
                43.90
             |                           
            
                44.30
             | 
            
                44.30
             |                     
            
                8.41
             |                                 
            
                275,820
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2010
             | 
            
                -2.40 / -5.00%
             |             
            
                47.50
             |           
            
                47.50
             |               
            
                45.60
             |                           
            
                45.60
             | 
            
                45.60
             |                     
            
                8.66
             |                                 
            
                569,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2010
             | 
            
                -0.10 / -0.21%
             |             
            
                48.00
             |           
            
                48.10
             |               
            
                47.00
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                9.11
             |                                 
            
                423,440
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2010
             | 
            
                +0.10 / +0.21%
             |             
            
                48.70
             |           
            
                48.90
             |               
            
                48.00
             |                           
            
                48.10
             | 
            
                48.10
             |                     
            
                9.13
             |                                 
            
                321,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2010
             | 
            
                +1.90 / +4.12%
             |             
            
                46.30
             |           
            
                48.00
             |               
            
                45.50
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                9.11
             |                                 
            
                256,640
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2010
             | 
            
                -2.40 / -4.95%
             |             
            
                47.00
             |           
            
                48.00
             |               
            
                46.10
             |                           
            
                46.10
             | 
            
                46.10
             |                     
            
                8.75
             |                                 
            
                472,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2010
             | 
            
                0.00 / 0.00%
             |             
            
                48.70
             |           
            
                48.70
             |               
            
                46.10
             |                           
            
                48.50
             | 
            
                48.50
             |                     
            
                9.21
             |                                 
            
                243,430
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2010
             | 
            
                -2.50 / -4.90%
             |             
            
                49.50
             |           
            
                50.00
             |               
            
                48.50
             |                           
            
                48.50
             | 
            
                48.50
             |                     
            
                9.21
             |                                 
            
                599,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2010
             | 
            
                -1.50 / -2.86%
             |             
            
                51.00
             |           
            
                52.50
             |               
            
                50.00
             |                           
            
                51.00
             | 
            
                51.00
             |                     
            
                9.68
             |                                 
            
                274,550
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2010
             | 
            
                -1.00 / -1.87%
             |             
            
                53.50
             |           
            
                53.50
             |               
            
                51.50
             |                           
            
                52.50
             | 
            
                52.50
             |                     
            
                9.97
             |                                 
            
                239,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2010
             | 
            
                -1.50 / -2.73%
             |             
            
                55.50
             |           
            
                55.50
             |               
            
                53.50
             |                           
            
                53.50
             | 
            
                53.50
             |                     
            
                10.16
             |                                 
            
                180,750
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2010
             | 
            
                -1.50 / -2.65%
             |             
            
                56.00
             |           
            
                56.00
             |               
            
                54.00
             |                           
            
                55.00
             | 
            
                55.00
             |                     
            
                10.44
             |                                 
            
                468,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2010
             | 
            
                -0.50 / -0.88%
             |             
            
                57.00
             |           
            
                57.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                10.73
             |                                 
            
                252,620
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2010
             | 
            
                -0.50 / -0.87%
             |             
            
                57.00
             |           
            
                57.00
             |               
            
                56.50
             |                           
            
                57.00
             | 
            
                57.00
             |                     
            
                10.82
             |                                 
            
                111,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2010
             | 
            
                0.00 / 0.00%
             |             
            
                57.50
             |           
            
                57.50
             |               
            
                57.00
             |                           
            
                57.50
             | 
            
                57.50
             |                     
            
                10.92
             |                                 
            
                158,680
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2010
             | 
            
                0.00 / 0.00%
             |             
            
                57.00
             |           
            
                57.50
             |               
            
                57.00
             |                           
            
                57.50
             | 
            
                57.50
             |                     
            
                10.92
             |                                 
            
                100,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2010
             | 
            
                -1.00 / -1.71%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                57.00
             |                           
            
                57.50
             | 
            
                57.50
             |                     
            
                10.92
             |                                 
            
                115,340
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2010
             | 
            
                -1.00 / -1.68%
             |             
            
                59.50
             |           
            
                59.50
             |               
            
                58.50
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                11.11
             |                                 
            
                91,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2010
             | 
            
                +1.00 / +1.71%
             |             
            
                59.50
             |           
            
                59.50
             |               
            
                58.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                11.30
             |                                 
            
                168,710
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2010
             | 
            
                +0.50 / +0.86%
             |             
            
                58.50
             |           
            
                59.00
             |               
            
                58.00
             |                           
            
                58.50
             | 
            
                58.50
             |                     
            
                11.11
             |                                 
            
                67,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2010
             | 
            
                -1.50 / -2.52%
             |             
            
                58.50
             |           
            
                59.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                11.01
             |                                 
            
                145,030
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2010
             | 
            
                -0.50 / -0.83%
             |             
            
                59.50
             |           
            
                60.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                11.30
             |                                 
            
                82,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2010
             | 
            
                -1.00 / -1.64%
             |             
            
                60.50
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                11.39
             |                                 
            
                126,620
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2010
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                11.58
             |                                 
            
                100,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2010
             | 
            
                -0.50 / -0.81%
             |             
            
                61.50
             |           
            
                61.50
             |               
            
                60.50
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                11.58
             |                                 
            
                300,250
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2010
             | 
            
                -0.50 / -0.81%
             |             
            
                61.00
             |           
            
                62.00
             |               
            
                60.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                11.68
             |                                 
            
                200,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2010
             | 
            
                0.00 / 0.00%
             |             
            
                62.50
             |           
            
                62.50
             |               
            
                61.50
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                11.77
             |                                 
            
                154,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2010
             | 
            
                0.00 / 0.00%
             |             
            
                63.00
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                11.77
             |                                 
            
                133,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2010
             | 
            
                +1.00 / +1.64%
             |             
            
                61.00
             |           
            
                62.00
             |               
            
                61.00
             |                           
            
                62.00
             | 
            
                62.00
             |                     
            
                11.77
             |                                 
            
                61,690
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                61.50
             |               
            
                61.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                11.58
             |                                 
            
                55,690
             |  
            
                 
             |                                                              
             
    
         
    
    
 |