| 
                 
                    Closing price on 3/2/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.10 | 
                 
                
                    | High | 
                    17.90 | 
                 
                
                    | Low | 
                    17.10 | 
                     
                
                    | Volume | 
                    334,510 | 
                                 
                
                    | Split-adjusted Price | 
                    4.64 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DIG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2012
             | 
            
                -0.60 / -4.51%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                3.29
             |                                 
            
                316,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                12.90
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                3.45
             |                                 
            
                289,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2012
             | 
            
                +0.50 / +3.91%
             |             
            
                12.80
             |           
            
                13.30
             |               
            
                12.80
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                3.45
             |                                 
            
                210,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/7/2012
             | 
            
                +0.30 / +2.40%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                3.32
             |                                 
            
                251,970
             |            
            
                 
             |                                       
         
    
        
            | 
                2/6/2012
             | 
            
                -0.10 / -0.79%
             |             
            
                12.30
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.24
             |                                 
            
                238,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2012
             | 
            
                -0.30 / -2.33%
             |             
            
                13.10
             |           
            
                13.50
             |               
            
                12.60
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                3.27
             |                                 
            
                493,860
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2012
             | 
            
                +0.60 / +4.88%
             |             
            
                12.50
             |           
            
                12.90
             |               
            
                12.40
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                3.35
             |                                 
            
                290,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2012
             | 
            
                +0.40 / +3.36%
             |             
            
                11.90
             |           
            
                12.30
             |               
            
                11.60
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                3.19
             |                                 
            
                244,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2012
             | 
            
                +0.30 / +2.59%
             |             
            
                11.80
             |           
            
                12.10
             |               
            
                11.80
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                3.09
             |                                 
            
                278,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2012
             | 
            
                +0.50 / +4.50%
             |             
            
                11.20
             |           
            
                11.60
             |               
            
                11.00
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                3.01
             |                                 
            
                185,580
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.30
             |           
            
                11.40
             |               
            
                11.00
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                2.88
             |                                 
            
                88,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2012
             | 
            
                +0.50 / +4.72%
             |             
            
                10.60
             |           
            
                11.10
             |               
            
                10.60
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                2.88
             |                                 
            
                240,730
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2012
             | 
            
                +0.50 / +4.95%
             |             
            
                10.10
             |           
            
                10.60
             |               
            
                10.10
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                2.75
             |                                 
            
                98,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                2.62
             |                                 
            
                144,730
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2012
             | 
            
                +0.40 / +4.12%
             |             
            
                9.70
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                2.62
             |                                 
            
                371,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |