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                    Closing price on 3/2/2011
                 |  |  
    
        |           
                
                    | Open | 28.50 |  
                    | High | 29.00 |  
                    | Low | 28.00 |  
                    | Volume | 294,950 |  
                    | Split-adjusted Price | 5.45 |  
                
             | 
 |  DIG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/2/2011 | -1.40 / -4.76% | 28.50 | 29.00 | 28.00 | 28.00 | 28.00 | 5.45 | 294,950 |   |  
            | 3/1/2011 | -0.10 / -0.34% | 29.50 | 29.50 | 28.70 | 29.40 | 29.40 | 5.72 | 84,550 |   |  			
            | 2/28/2011 | -0.30 / -1.01% | 29.20 | 30.00 | 29.20 | 29.50 | 29.50 | 5.74 | 54,440 |   |  
            | 2/25/2011 | +0.40 / +1.36% | 30.10 | 30.10 | 29.30 | 29.80 | 29.80 | 5.80 | 66,730 |   |  			
            | 2/24/2011 | -1.10 / -3.61% | 30.50 | 30.50 | 29.00 | 29.40 | 29.40 | 5.72 | 249,220 |   |  
            | 2/23/2011 | 0.00 / 0.00% | 31.50 | 31.50 | 30.40 | 30.50 | 30.50 | 5.93 | 133,940 |   |  			
            | 2/22/2011 | -1.50 / -4.69% | 30.40 | 31.50 | 30.40 | 30.50 | 30.50 | 5.93 | 226,540 |   |  
            | 2/21/2011 | -1.60 / -4.76% | 33.00 | 33.00 | 32.00 | 32.00 | 32.00 | 6.23 | 75,230 |   |  			
            | 2/18/2011 | -1.00 / -2.89% | 33.80 | 34.00 | 33.50 | 33.60 | 33.60 | 6.54 | 127,910 |   |  
            | 2/17/2011 | -1.40 / -3.89% | 35.40 | 36.00 | 34.50 | 34.60 | 34.60 | 6.73 | 144,210 |   |  			
            | 2/16/2011 | -0.50 / -1.37% | 36.30 | 36.50 | 36.00 | 36.00 | 36.00 | 7.00 | 172,170 |   |  
            | 2/15/2011 | -0.80 / -2.14% | 36.40 | 36.90 | 36.20 | 36.50 | 36.50 | 7.10 | 131,470 |   |  			
            | 2/14/2011 | -0.50 / -1.32% | 38.00 | 38.00 | 37.30 | 37.30 | 37.30 | 7.26 | 45,750 |   |  
            | 2/11/2011 | -0.10 / -0.26% | 37.50 | 37.90 | 37.50 | 37.80 | 37.80 | 7.35 | 134,780 |   |  			
            | 2/10/2011 | +0.10 / +0.26% | 38.00 | 38.10 | 37.90 | 37.90 | 37.90 | 7.37 | 98,810 |   |  
            | 2/9/2011 | -0.80 / -2.07% | 38.20 | 38.90 | 37.80 | 37.80 | 37.80 | 7.35 | 96,850 |   |  			
            | 2/8/2011 | +0.60 / +1.58% | 38.60 | 38.70 | 38.40 | 38.60 | 38.60 | 7.51 | 96,290 |   |  
            | 1/28/2011 | 0.00 / 0.00% | 38.10 | 38.10 | 38.00 | 38.00 | 38.00 | 7.39 | 133,540 |   |  			
            | 1/27/2011 | +0.20 / +0.53% | 38.20 | 38.20 | 37.80 | 38.00 | 38.00 | 7.39 | 176,370 |   |  
            | 1/26/2011 | +0.30 / +0.80% | 38.10 | 38.10 | 37.50 | 37.80 | 37.80 | 7.35 | 45,550 |   |  			
            | 1/25/2011 | 0.00 / 0.00% | 37.10 | 38.40 | 37.10 | 37.50 | 37.50 | 7.30 | 47,610 |   |  
            | 1/24/2011 | -1.20 / -3.10% | 38.70 | 38.70 | 37.50 | 37.50 | 37.50 | 7.30 | 154,560 |   |  			
            | 1/21/2011 | +0.70 / +1.84% | 37.60 | 38.80 | 37.60 | 38.70 | 38.70 | 7.53 | 298,080 |   |  
            | 1/20/2011 | -0.40 / -1.04% | 38.40 | 38.40 | 38.00 | 38.00 | 38.00 | 7.39 | 79,700 |   |  			
            | 1/19/2011 | 0.00 / 0.00% | 39.20 | 39.80 | 38.20 | 38.40 | 38.40 | 7.47 | 153,870 |   |  
            | 1/18/2011 | -1.40 / -3.52% | 39.80 | 39.90 | 38.40 | 38.40 | 38.40 | 7.47 | 79,200 |   |  			
            | 1/17/2011 | +0.30 / +0.76% | 39.50 | 40.10 | 39.50 | 39.80 | 39.80 | 7.74 | 88,990 |   |  
            | 1/14/2011 | +0.60 / +1.54% | 38.90 | 39.50 | 38.70 | 39.50 | 39.50 | 7.68 | 114,960 |   |  			
            | 1/13/2011 | +0.90 / +2.37% | 37.70 | 38.90 | 37.70 | 38.90 | 38.90 | 7.57 | 101,740 |   |  
            | 1/12/2011 | -0.10 / -0.26% | 38.10 | 39.00 | 38.00 | 38.00 | 38.00 | 7.39 | 66,950 |   |  |