| 
                 
                    Closing price on 12/15/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    45.90 | 
                 
                
                    | High | 
                    45.90 | 
                 
                
                    | Low | 
                    44.60 | 
                     
                
                    | Volume | 
                    858,460 | 
                                 
                
                    | Split-adjusted Price | 
                    8.54 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/15/2010
             | 
            
                +1.20 / +2.74%
             |             
            
                45.90
             |           
            
                45.90
             |               
            
                44.60
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                8.54
             |                                 
            
                858,460
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2010
             | 
            
                +2.00 / +4.78%
             |             
            
                43.80
             |           
            
                43.80
             |               
            
                41.80
             |                           
            
                43.80
             | 
            
                43.80
             |                     
            
                8.32
             |                                 
            
                1,873,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2010
             | 
            
                +1.90 / +4.76%
             |             
            
                41.80
             |           
            
                41.80
             |               
            
                41.80
             |                           
            
                41.80
             | 
            
                41.80
             |                     
            
                7.94
             |                                 
            
                22,720
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2010
             | 
            
                +1.90 / +5.00%
             |             
            
                39.90
             |           
            
                39.90
             |               
            
                39.30
             |                           
            
                39.90
             | 
            
                39.90
             |                     
            
                7.58
             |                                 
            
                596,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2010
             | 
            
                +0.80 / +2.15%
             |             
            
                36.70
             |           
            
                38.90
             |               
            
                36.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                7.21
             |                                 
            
                331,160
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2010
             | 
            
                -1.90 / -4.86%
             |             
            
                38.00
             |           
            
                39.00
             |               
            
                37.20
             |                           
            
                37.20
             | 
            
                37.20
             |                     
            
                7.06
             |                                 
            
                382,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2010
             | 
            
                -0.80 / -2.01%
             |             
            
                39.90
             |           
            
                40.20
             |               
            
                38.70
             |                           
            
                39.10
             | 
            
                39.10
             |                     
            
                7.42
             |                                 
            
                286,530
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2010
             | 
            
                +0.60 / +1.53%
             |             
            
                41.10
             |           
            
                41.20
             |               
            
                39.10
             |                           
            
                39.90
             | 
            
                39.90
             |                     
            
                7.58
             |                                 
            
                686,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2010
             | 
            
                +1.80 / +4.80%
             |             
            
                39.30
             |           
            
                39.30
             |               
            
                39.30
             |                           
            
                39.30
             | 
            
                39.30
             |                     
            
                7.46
             |                                 
            
                381,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2010
             | 
            
                +1.70 / +4.75%
             |             
            
                35.80
             |           
            
                37.50
             |               
            
                35.80
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                7.12
             |                                 
            
                364,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2010
             | 
            
                +1.50 / +4.37%
             |             
            
                34.30
             |           
            
                36.00
             |               
            
                33.20
             |                           
            
                35.80
             | 
            
                35.80
             |                     
            
                6.80
             |                                 
            
                288,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2010
             | 
            
                +1.60 / +4.89%
             |             
            
                34.30
             |           
            
                34.30
             |               
            
                34.00
             |                           
            
                34.30
             | 
            
                34.30
             |                     
            
                6.51
             |                                 
            
                426,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2010
             | 
            
                +0.50 / +1.55%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.20
             |                           
            
                32.70
             | 
            
                32.70
             |                     
            
                6.21
             |                                 
            
                262,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2010
             | 
            
                0.00 / 0.00%
             |             
            
                33.70
             |           
            
                33.70
             |               
            
                32.20
             |                           
            
                32.20
             | 
            
                32.20
             |                     
            
                6.11
             |                                 
            
                149,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2010
             | 
            
                +0.70 / +2.22%
             |             
            
                32.00
             |           
            
                32.70
             |               
            
                31.50
             |                           
            
                32.20
             | 
            
                32.20
             |                     
            
                6.11
             |                                 
            
                128,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2010
             | 
            
                -0.90 / -2.78%
             |             
            
                32.00
             |           
            
                32.10
             |               
            
                31.40
             |                           
            
                31.50
             | 
            
                31.50
             |                     
            
                5.98
             |                                 
            
                136,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2010
             | 
            
                +0.40 / +1.25%
             |             
            
                32.00
             |           
            
                33.00
             |               
            
                31.90
             |                           
            
                32.40
             | 
            
                32.40
             |                     
            
                6.15
             |                                 
            
                120,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2010
             | 
            
                -1.10 / -3.32%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                31.50
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                6.08
             |                                 
            
                112,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2010
             | 
            
                -0.40 / -1.19%
             |             
            
                33.50
             |           
            
                33.90
             |               
            
                33.00
             |                           
            
                33.10
             | 
            
                33.10
             |                     
            
                6.28
             |                                 
            
                152,060
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2010
             | 
            
                +0.70 / +2.13%
             |             
            
                32.80
             |           
            
                34.40
             |               
            
                32.80
             |                           
            
                33.50
             | 
            
                33.50
             |                     
            
                6.36
             |                                 
            
                185,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2010
             | 
            
                -1.70 / -4.93%
             |             
            
                33.10
             |           
            
                35.50
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                6.23
             |                                 
            
                225,650
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2010
             | 
            
                -1.60 / -4.43%
             |             
            
                34.60
             |           
            
                34.70
             |               
            
                34.30
             |                           
            
                34.50
             | 
            
                34.50
             |                     
            
                6.55
             |                                 
            
                183,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2010
             | 
            
                -1.90 / -5.00%
             |             
            
                37.50
             |           
            
                38.20
             |               
            
                36.10
             |                           
            
                36.10
             | 
            
                36.10
             |                     
            
                6.85
             |                                 
            
                105,310
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2010
             | 
            
                -0.90 / -2.31%
             |             
            
                38.00
             |           
            
                38.50
             |               
            
                37.30
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                7.21
             |                                 
            
                240,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/11/2010
             | 
            
                -1.20 / -2.99%
             |             
            
                40.10
             |           
            
                40.10
             |               
            
                38.10
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                7.39
             |                                 
            
                125,140
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2010
             | 
            
                +0.10 / +0.25%
             |             
            
                39.50
             |           
            
                40.80
             |               
            
                39.50
             |                           
            
                40.10
             | 
            
                40.10
             |                     
            
                7.61
             |                                 
            
                52,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2010
             | 
            
                -1.60 / -3.85%
             |             
            
                41.50
             |           
            
                41.50
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                7.59
             |                                 
            
                143,890
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2010
             | 
            
                0.00 / 0.00%
             |             
            
                41.50
             |           
            
                41.60
             |               
            
                41.10
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                7.90
             |                                 
            
                69,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/5/2010
             | 
            
                +1.10 / +2.72%
             |             
            
                41.90
             |           
            
                41.90
             |               
            
                40.60
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                7.90
             |                                 
            
                59,650
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2010
             | 
            
                0.00 / 0.00%
             |             
            
                40.50
             |           
            
                40.80
             |               
            
                40.50
             |                           
            
                40.50
             | 
            
                40.50
             |                     
            
                7.69
             |                                 
            
                35,130
             |  
            
                 
             |                                                              
             
    
         
    
    
 |