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                    Closing price on 8/11/2011
                 |  |  
    
        |           
                
                    | Open | 15.00 |  
                    | High | 15.20 |  
                    | Low | 14.80 |  
                    | Volume | 36,510 |  
                    | Split-adjusted Price | 2.96 |  
                
             | 
 |  DIG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/11/2011 | 0.00 / 0.00% | 15.00 | 15.20 | 14.80 | 15.20 | 15.20 | 2.96 | 36,510 |   |  
            | 8/10/2011 | +0.10 / +0.66% | 15.10 | 15.50 | 15.10 | 15.20 | 15.20 | 2.96 | 415,650 |   |  			
            | 8/9/2011 | -0.70 / -4.43% | 15.50 | 15.50 | 15.10 | 15.10 | 15.10 | 2.94 | 173,770 |   |  
            | 8/8/2011 | +0.40 / +2.60% | 15.80 | 16.10 | 15.60 | 15.80 | 15.80 | 3.07 | 190,820 |   |  			
            | 8/5/2011 | -0.60 / -3.75% | 15.30 | 16.00 | 15.30 | 15.40 | 15.40 | 3.00 | 48,840 |   |  
            | 8/4/2011 | +0.70 / +4.58% | 15.30 | 16.00 | 15.30 | 16.00 | 16.00 | 3.11 | 162,580 |   |  			
            | 8/3/2011 | -0.40 / -2.55% | 15.70 | 15.70 | 15.20 | 15.30 | 15.30 | 2.98 | 45,900 |   |  
            | 8/2/2011 | -0.60 / -3.68% | 16.10 | 16.20 | 15.60 | 15.70 | 15.70 | 3.05 | 23,800 |   |  			
            | 8/1/2011 | -0.20 / -1.21% | 16.10 | 16.30 | 15.70 | 16.30 | 16.30 | 3.17 | 150,280 |   |  
            | 7/29/2011 | -0.20 / -1.20% | 16.50 | 16.60 | 16.30 | 16.50 | 16.50 | 3.21 | 90,090 |   |  			
            | 7/28/2011 | -0.10 / -0.60% | 16.80 | 17.00 | 16.70 | 16.70 | 16.70 | 3.25 | 117,720 |   |  
            | 7/27/2011 | 0.00 / 0.00% | 17.10 | 17.10 | 16.80 | 16.80 | 16.80 | 3.27 | 75,250 |   |  			
            | 7/26/2011 | -0.20 / -1.18% | 16.90 | 17.00 | 16.70 | 16.80 | 16.80 | 3.27 | 47,000 |   |  
            | 7/25/2011 | -0.10 / -0.58% | 17.20 | 17.20 | 17.00 | 17.00 | 17.00 | 3.31 | 28,240 |   |  			
            | 7/22/2011 | 0.00 / 0.00% | 17.10 | 17.10 | 17.00 | 17.10 | 17.10 | 3.33 | 40,190 |   |  
            | 7/21/2011 | -0.20 / -1.16% | 17.30 | 17.30 | 17.00 | 17.10 | 17.10 | 3.33 | 76,560 |   |  			
            | 7/20/2011 | +0.40 / +2.37% | 16.80 | 17.50 | 16.80 | 17.30 | 17.30 | 3.37 | 137,230 |   |  
            | 7/19/2011 | 0.00 / 0.00% | 16.90 | 16.90 | 16.80 | 16.90 | 16.90 | 3.29 | 30,700 |   |  			
            | 7/18/2011 | 0.00 / 0.00% | 17.00 | 17.00 | 16.60 | 16.90 | 16.90 | 3.29 | 16,820 |   |  
            | 7/15/2011 | -0.20 / -1.17% | 17.00 | 17.10 | 16.90 | 16.90 | 16.90 | 3.29 | 63,650 |   |  			
            | 7/14/2011 | -0.20 / -1.16% | 17.00 | 17.20 | 16.80 | 17.10 | 17.10 | 3.33 | 59,120 |   |  
            | 7/13/2011 | 0.00 / 0.00% | 17.30 | 17.40 | 16.80 | 17.30 | 17.30 | 3.37 | 64,440 |   |  			
            | 7/12/2011 | -0.10 / -0.57% | 17.40 | 17.40 | 16.80 | 17.30 | 17.30 | 3.37 | 141,920 |   |  
            | 7/11/2011 | +0.20 / +1.16% | 17.30 | 17.40 | 17.00 | 17.40 | 17.40 | 3.39 | 36,460 |   |  			
            | 7/8/2011 | -0.20 / -1.15% | 17.20 | 17.40 | 17.20 | 17.20 | 17.20 | 3.35 | 213,420 |   |  
            | 7/7/2011 | 0.00 / 0.00% | 17.60 | 17.60 | 17.40 | 17.40 | 17.40 | 3.39 | 54,250 |   |  			
            | 7/6/2011 | -0.70 / -3.87% | 18.60 | 18.60 | 17.40 | 17.40 | 17.40 | 3.39 | 194,260 |   |  
            | 7/5/2011 | +0.60 / +3.43% | 18.30 | 18.30 | 17.50 | 18.10 | 18.10 | 3.52 | 128,040 |   |  			
            | 7/4/2011 | -0.10 / -0.57% | 17.60 | 17.60 | 17.20 | 17.50 | 17.50 | 3.40 | 33,900 |   |  
            | 7/1/2011 | -0.70 / -3.83% | 18.30 | 18.30 | 17.50 | 17.60 | 17.60 | 3.42 | 121,410 |   |  |