| 
                 
                    Closing price on 3/23/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    18.50 | 
                 
                
                    | High | 
                    18.60 | 
                 
                
                    | Low | 
                    18.00 | 
                     
                
                    | Volume | 
                    372,290 | 
                                 
                
                    | Split-adjusted Price | 
                    4.75 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/23/2012
             | 
            
                -0.20 / -1.08%
             |             
            
                18.50
             |           
            
                18.60
             |               
            
                18.00
             |                           
            
                18.30
             | 
            
                18.30
             |                     
            
                4.75
             |                                 
            
                372,290
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2012
             | 
            
                +0.30 / +1.65%
             |             
            
                18.40
             |           
            
                18.50
             |               
            
                18.00
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                4.80
             |                                 
            
                166,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2012
             | 
            
                +0.80 / +4.60%
             |             
            
                17.40
             |           
            
                18.20
             |               
            
                17.40
             |                           
            
                18.20
             | 
            
                18.20
             |                     
            
                4.72
             |                                 
            
                603,670
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2012
             | 
            
                +0.40 / +2.35%
             |             
            
                17.20
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.40
             | 
            
                17.40
             |                     
            
                4.51
             |                                 
            
                111,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2012
             | 
            
                -0.20 / -1.16%
             |             
            
                17.20
             |           
            
                17.90
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                4.41
             |                                 
            
                302,570
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                -0.70 / -3.91%
             |             
            
                18.20
             |           
            
                18.50
             |               
            
                17.20
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                4.46
             |                                 
            
                574,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                +0.80 / +4.68%
             |             
            
                17.00
             |           
            
                17.90
             |               
            
                16.70
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                4.64
             |                                 
            
                271,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                +0.50 / +3.01%
             |             
            
                17.00
             |           
            
                17.40
             |               
            
                16.60
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                4.44
             |                                 
            
                305,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                +0.10 / +0.61%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.10
             |                           
            
                16.60
             | 
            
                16.60
             |                     
            
                4.31
             |                                 
            
                103,250
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                -0.80 / -4.62%
             |             
            
                17.70
             |           
            
                17.70
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                4.28
             |                                 
            
                359,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2012
             | 
            
                -0.20 / -1.14%
             |             
            
                17.00
             |           
            
                18.00
             |               
            
                16.80
             |                           
            
                17.30
             | 
            
                17.30
             |                     
            
                4.49
             |                                 
            
                261,830
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2012
             | 
            
                -0.90 / -4.89%
             |             
            
                17.80
             |           
            
                19.00
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                4.54
             |                                 
            
                377,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2012
             | 
            
                +0.60 / +3.37%
             |             
            
                17.80
             |           
            
                18.60
             |               
            
                17.00
             |                           
            
                18.40
             | 
            
                18.40
             |                     
            
                4.77
             |                                 
            
                494,270
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2012
             | 
            
                -0.90 / -4.81%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                4.62
             |                                 
            
                573,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2012
             | 
            
                +0.80 / +4.47%
             |             
            
                18.60
             |           
            
                18.70
             |               
            
                18.40
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                4.85
             |                                 
            
                150,020
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2012
             | 
            
                +0.80 / +4.68%
             |             
            
                17.10
             |           
            
                17.90
             |               
            
                17.10
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                4.64
             |                                 
            
                334,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2012
             | 
            
                +0.70 / +4.27%
             |             
            
                16.40
             |           
            
                17.20
             |               
            
                16.00
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                4.44
             |                                 
            
                410,630
             |            
            
                 
             |                                       
         
    
        
            | 
                2/29/2012
             | 
            
                +0.50 / +3.14%
             |             
            
                15.90
             |           
            
                16.40
             |               
            
                15.50
             |                           
            
                16.40
             | 
            
                16.40
             |                     
            
                4.25
             |                                 
            
                375,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2012
             | 
            
                -0.80 / -4.79%
             |             
            
                16.70
             |           
            
                16.70
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                4.12
             |                                 
            
                462,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2012
             | 
            
                +0.70 / +4.38%
             |             
            
                16.00
             |           
            
                16.80
             |               
            
                15.60
             |                           
            
                16.70
             | 
            
                16.70
             |                     
            
                4.33
             |                                 
            
                365,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2012
             | 
            
                +0.50 / +3.23%
             |             
            
                15.90
             |           
            
                16.20
             |               
            
                15.70
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                4.15
             |                                 
            
                930,110
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2012
             | 
            
                +0.70 / +4.73%
             |             
            
                15.10
             |           
            
                15.50
             |               
            
                14.80
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                4.02
             |                                 
            
                599,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2012
             | 
            
                +0.70 / +4.96%
             |             
            
                14.10
             |           
            
                14.80
             |               
            
                13.70
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                3.84
             |                                 
            
                442,590
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2012
             | 
            
                +0.40 / +2.92%
             |             
            
                14.10
             |           
            
                14.30
             |               
            
                13.80
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                3.66
             |                                 
            
                364,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2012
             | 
            
                +0.60 / +4.58%
             |             
            
                13.30
             |           
            
                13.70
             |               
            
                13.30
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                3.55
             |                                 
            
                357,890
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2012
             | 
            
                +0.30 / +2.34%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.90
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                3.40
             |                                 
            
                210,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2012
             | 
            
                +0.30 / +2.40%
             |             
            
                12.30
             |           
            
                12.80
             |               
            
                12.30
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                3.32
             |                                 
            
                64,810
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2012
             | 
            
                -0.30 / -2.34%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.24
             |                                 
            
                160,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2012
             | 
            
                +0.40 / +3.23%
             |             
            
                12.50
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                3.32
             |                                 
            
                57,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2012
             | 
            
                -0.30 / -2.36%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                3.22
             |                                 
            
                427,060
             |  
            
                 
             |                                                              
             
    
         
    
    
 |