| 
                 
                    Closing price on 5/12/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    69.00 | 
                 
                
                    | High | 
                    69.00 | 
                 
                
                    | Low | 
                    68.00 | 
                     
                
                    | Volume | 
                    343,550 | 
                                 
                
                    | Split-adjusted Price | 
                    13.01 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/12/2010
             | 
            
                -1.00 / -1.44%
             |             
            
                69.00
             |           
            
                69.00
             |               
            
                68.00
             |                           
            
                68.50
             | 
            
                68.50
             |                     
            
                13.01
             |                                 
            
                343,550
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2010
             | 
            
                +0.50 / +0.72%
             |             
            
                70.00
             |           
            
                70.00
             |               
            
                69.00
             |                           
            
                69.50
             | 
            
                69.50
             |                     
            
                13.20
             |                                 
            
                196,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2010
             | 
            
                -1.00 / -1.43%
             |             
            
                70.00
             |           
            
                70.00
             |               
            
                69.00
             |                           
            
                69.00
             | 
            
                69.00
             |                     
            
                13.10
             |                                 
            
                183,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2010
             | 
            
                -1.00 / -1.41%
             |             
            
                70.50
             |           
            
                70.50
             |               
            
                69.00
             |                           
            
                70.00
             | 
            
                70.00
             |                     
            
                13.29
             |                                 
            
                658,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2010
             | 
            
                0.00 / 0.00%
             |             
            
                71.50
             |           
            
                71.50
             |               
            
                70.50
             |                           
            
                71.00
             | 
            
                71.00
             |                     
            
                13.48
             |                                 
            
                431,560
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2010
             | 
            
                -1.00 / -1.39%
             |             
            
                71.50
             |           
            
                72.00
             |               
            
                71.00
             |                           
            
                71.00
             | 
            
                71.00
             |                     
            
                13.48
             |                                 
            
                413,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2010
             | 
            
                +0.50 / +0.70%
             |             
            
                71.50
             |           
            
                72.50
             |               
            
                71.50
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                13.67
             |                                 
            
                304,830
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2010
             | 
            
                -0.50 / -0.69%
             |             
            
                72.50
             |           
            
                73.00
             |               
            
                71.50
             |                           
            
                71.50
             | 
            
                71.50
             |                     
            
                13.58
             |                                 
            
                332,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2010
             | 
            
                0.00 / 0.00%
             |             
            
                72.00
             |           
            
                72.50
             |               
            
                71.50
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                13.67
             |                                 
            
                369,240
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2010
             | 
            
                -0.50 / -0.69%
             |             
            
                72.50
             |           
            
                72.50
             |               
            
                72.00
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                13.67
             |                                 
            
                263,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2010
             | 
            
                -0.50 / -0.68%
             |             
            
                73.50
             |           
            
                73.50
             |               
            
                72.50
             |                           
            
                72.50
             | 
            
                72.50
             |                     
            
                13.77
             |                                 
            
                351,820
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2010
             | 
            
                +2.50 / +3.55%
             |             
            
                71.50
             |           
            
                74.00
             |               
            
                70.50
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                13.86
             |                                 
            
                502,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2010
             | 
            
                +0.50 / +0.71%
             |             
            
                71.00
             |           
            
                71.50
             |               
            
                70.50
             |                           
            
                70.50
             | 
            
                70.50
             |                     
            
                13.39
             |                                 
            
                220,970
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2010
             | 
            
                -1.00 / -1.41%
             |             
            
                71.50
             |           
            
                72.00
             |               
            
                70.00
             |                           
            
                70.00
             | 
            
                70.00
             |                     
            
                13.29
             |                                 
            
                394,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2010
             | 
            
                -1.00 / -1.39%
             |             
            
                72.00
             |           
            
                72.50
             |               
            
                71.00
             |                           
            
                71.00
             | 
            
                71.00
             |                     
            
                13.48
             |                                 
            
                229,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2010
             | 
            
                -1.00 / -1.37%
             |             
            
                73.00
             |           
            
                73.00
             |               
            
                72.00
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                13.67
             |                                 
            
                200,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2010
             | 
            
                +0.50 / +0.69%
             |             
            
                73.50
             |           
            
                73.50
             |               
            
                72.50
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                13.86
             |                                 
            
                242,770
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2010
             | 
            
                0.00 / 0.00%
             |             
            
                73.00
             |           
            
                73.00
             |               
            
                72.00
             |                           
            
                72.50
             | 
            
                72.50
             |                     
            
                13.77
             |                                 
            
                233,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2010
             | 
            
                -1.00 / -1.36%
             |             
            
                74.00
             |           
            
                74.50
             |               
            
                72.50
             |                           
            
                72.50
             | 
            
                72.50
             |                     
            
                13.77
             |                                 
            
                296,750
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2010
             | 
            
                0.00 / 0.00%
             |             
            
                73.50
             |           
            
                73.50
             |               
            
                73.50
             |                           
            
                73.50
             | 
            
                73.50
             |                     
            
                13.95
             |                                 
            
                356,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2010
             | 
            
                +0.50 / +0.68%
             |             
            
                73.50
             |           
            
                74.00
             |               
            
                73.00
             |                           
            
                73.50
             | 
            
                73.50
             |                     
            
                13.95
             |                                 
            
                418,810
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2010
             | 
            
                -0.50 / -0.68%
             |             
            
                74.00
             |           
            
                74.00
             |               
            
                73.00
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                13.86
             |                                 
            
                353,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2010
             | 
            
                -0.50 / -0.68%
             |             
            
                74.50
             |           
            
                74.50
             |               
            
                73.00
             |                           
            
                73.50
             | 
            
                73.50
             |                     
            
                13.95
             |                                 
            
                380,110
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2010
             | 
            
                +1.00 / +1.37%
             |             
            
                73.00
             |           
            
                74.50
             |               
            
                73.00
             |                           
            
                74.00
             | 
            
                74.00
             |                     
            
                14.05
             |                                 
            
                564,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2010
             | 
            
                +1.50 / +2.10%
             |             
            
                72.50
             |           
            
                73.50
             |               
            
                71.50
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                13.86
             |                                 
            
                460,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2010
             | 
            
                0.00 / 0.00%
             |             
            
                72.00
             |           
            
                72.50
             |               
            
                71.00
             |                           
            
                71.50
             | 
            
                71.50
             |                     
            
                13.58
             |                                 
            
                346,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2010
             | 
            
                +3.00 / +4.38%
             |             
            
                68.50
             |           
            
                71.50
             |               
            
                68.50
             |                           
            
                71.50
             | 
            
                71.50
             |                     
            
                13.58
             |                                 
            
                486,070
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2010
             | 
            
                -1.50 / -2.14%
             |             
            
                70.00
             |           
            
                70.50
             |               
            
                68.50
             |                           
            
                68.50
             | 
            
                68.50
             |                     
            
                13.01
             |                                 
            
                387,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2010
             | 
            
                -0.50 / -0.71%
             |             
            
                70.50
             |           
            
                70.50
             |               
            
                70.00
             |                           
            
                70.00
             | 
            
                70.00
             |                     
            
                13.29
             |                                 
            
                228,660
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2010
             | 
            
                -0.50 / -0.70%
             |             
            
                71.00
             |           
            
                71.50
             |               
            
                70.00
             |                           
            
                70.50
             | 
            
                70.50
             |                     
            
                13.39
             |                                 
            
                259,830
             |  
            
                 
             |                                                              
             
    
         
    
    
 |