| 
                 
                    Closing price on 6/2/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    18.70 | 
                 
                
                    | High | 
                    18.90 | 
                 
                
                    | Low | 
                    18.70 | 
                     
                
                    | Volume | 
                    102,010 | 
                                 
                
                    | Split-adjusted Price | 
                    3.68 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/2/2011
             | 
            
                +0.90 / +5.00%
             |             
            
                18.70
             |           
            
                18.90
             |               
            
                18.70
             |                           
            
                18.90
             | 
            
                18.90
             |                     
            
                3.68
             |                                 
            
                102,010
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2011
             | 
            
                +0.80 / +4.65%
             |             
            
                17.30
             |           
            
                18.00
             |               
            
                17.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                3.50
             |                                 
            
                108,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2011
             | 
            
                -0.70 / -3.91%
             |             
            
                17.30
             |           
            
                17.70
             |               
            
                17.10
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                3.35
             |                                 
            
                145,860
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2011
             | 
            
                -0.60 / -3.24%
             |             
            
                18.00
             |           
            
                18.40
             |               
            
                17.60
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                3.48
             |                                 
            
                45,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2011
             | 
            
                -0.30 / -1.60%
             |             
            
                18.80
             |           
            
                19.50
             |               
            
                17.90
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                3.60
             |                                 
            
                184,560
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2011
             | 
            
                +0.70 / +3.87%
             |             
            
                17.20
             |           
            
                19.00
             |               
            
                17.20
             |                           
            
                18.80
             | 
            
                18.80
             |                     
            
                3.66
             |                                 
            
                258,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2011
             | 
            
                -0.90 / -4.74%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                18.10
             |                           
            
                18.10
             | 
            
                18.10
             |                     
            
                3.52
             |                                 
            
                33,780
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2011
             | 
            
                -0.90 / -4.52%
             |             
            
                19.00
             |           
            
                19.10
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                3.70
             |                                 
            
                61,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2011
             | 
            
                -1.00 / -4.78%
             |             
            
                20.00
             |           
            
                20.00
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                3.87
             |                                 
            
                88,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2011
             | 
            
                -1.00 / -4.57%
             |             
            
                21.10
             |           
            
                21.30
             |               
            
                20.90
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                4.07
             |                                 
            
                85,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2011
             | 
            
                -0.10 / -0.45%
             |             
            
                21.80
             |           
            
                22.40
             |               
            
                21.50
             |                           
            
                21.90
             | 
            
                21.90
             |                     
            
                4.26
             |                                 
            
                67,650
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2011
             | 
            
                +0.30 / +1.38%
             |             
            
                22.00
             |           
            
                22.00
             |               
            
                20.90
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                4.28
             |                                 
            
                58,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2011
             | 
            
                -0.30 / -1.36%
             |             
            
                21.50
             |           
            
                22.30
             |               
            
                21.20
             |                           
            
                21.70
             | 
            
                21.70
             |                     
            
                4.22
             |                                 
            
                50,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2011
             | 
            
                -0.70 / -3.08%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.00
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                4.28
             |                                 
            
                72,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2011
             | 
            
                -0.20 / -0.87%
             |             
            
                22.90
             |           
            
                22.90
             |               
            
                22.60
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                4.42
             |                                 
            
                34,480
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2011
             | 
            
                -0.10 / -0.43%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                22.70
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                4.46
             |                                 
            
                60,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2011
             | 
            
                -0.40 / -1.71%
             |             
            
                23.40
             |           
            
                23.40
             |               
            
                22.90
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                4.47
             |                                 
            
                53,840
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2011
             | 
            
                +0.20 / +0.86%
             |             
            
                23.70
             |           
            
                23.80
             |               
            
                23.30
             |                           
            
                23.40
             | 
            
                23.40
             |                     
            
                4.55
             |                                 
            
                151,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2011
             | 
            
                +0.40 / +1.75%
             |             
            
                23.20
             |           
            
                23.20
             |               
            
                22.80
             |                           
            
                23.20
             | 
            
                23.20
             |                     
            
                4.51
             |                                 
            
                58,370
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2011
             | 
            
                +0.40 / +1.79%
             |             
            
                22.50
             |           
            
                23.00
             |               
            
                22.40
             |                           
            
                22.80
             | 
            
                22.80
             |                     
            
                4.44
             |                                 
            
                97,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2011
             | 
            
                +0.10 / +0.45%
             |             
            
                23.20
             |           
            
                23.20
             |               
            
                22.30
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                4.36
             |                                 
            
                90,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2011
             | 
            
                -0.20 / -0.89%
             |             
            
                22.50
             |           
            
                22.60
             |               
            
                22.30
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                4.34
             |                                 
            
                189,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2011
             | 
            
                +0.60 / +2.74%
             |             
            
                21.70
             |           
            
                22.50
             |               
            
                21.70
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                4.38
             |                                 
            
                160,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2011
             | 
            
                -0.50 / -2.23%
             |             
            
                22.00
             |           
            
                22.10
             |               
            
                21.90
             |                           
            
                21.90
             | 
            
                21.90
             |                     
            
                4.26
             |                                 
            
                136,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2011
             | 
            
                -0.50 / -2.18%
             |             
            
                22.90
             |           
            
                23.00
             |               
            
                22.40
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                4.36
             |                                 
            
                147,050
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2011
             | 
            
                -1.10 / -4.58%
             |             
            
                23.40
             |           
            
                24.20
             |               
            
                22.90
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                4.46
             |                                 
            
                129,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2011
             | 
            
                +0.70 / +3.00%
             |             
            
                23.90
             |           
            
                24.40
             |               
            
                23.90
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                4.67
             |                                 
            
                244,940
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2011
             | 
            
                -1.20 / -4.90%
             |             
            
                24.00
             |           
            
                24.30
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                4.53
             |                                 
            
                138,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2011
             | 
            
                -1.20 / -4.67%
             |             
            
                25.70
             |           
            
                25.70
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                4.77
             |                                 
            
                257,940
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2011
             | 
            
                -0.20 / -0.77%
             |             
            
                26.40
             |           
            
                26.40
             |               
            
                25.50
             |                           
            
                25.70
             | 
            
                25.70
             |                     
            
                5.00
             |                                 
            
                88,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |