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                    Closing price on 10/18/2011
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        |           
                
                    | Open | 6.80 |  
                    | High | 7.10 |  
                    | Low | 6.80 |  
                    | Volume | 3,400 |  
                    | Split-adjusted Price | 3.11 |  
                
             | 
 |  MDG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/18/2011 | +0.20 / +2.90% | 6.80 | 7.10 | 6.80 | 7.10 | 7.10 | 3.11 | 3,400 |   |  
            | 10/17/2011 | -0.20 / -2.82% | 7.00 | 7.00 | 6.90 | 6.90 | 6.90 | 3.02 | 16,800 |   |  			
            | 10/14/2011 | 0.00 / 0.00% | 6.90 | 7.10 | 6.90 | 7.10 | 7.10 | 3.11 | 6,120 |   |  
            | 10/13/2011 | +0.10 / +1.43% | 7.00 | 7.20 | 7.00 | 7.10 | 7.10 | 3.11 | 13,110 |   |  			
            | 10/12/2011 | -0.20 / -2.78% | 7.30 | 7.30 | 7.00 | 7.00 | 7.00 | 3.06 | 25,510 |   |  
            | 10/11/2011 | -0.10 / -1.37% | 7.30 | 7.30 | 7.10 | 7.20 | 7.20 | 3.15 | 46,020 |   |  			
            | 10/10/2011 | 0.00 / 0.00% | 7.40 | 7.50 | 7.30 | 7.30 | 7.30 | 3.19 | 320 |   |  
            | 10/7/2011 | -0.10 / -1.35% | 7.40 | 7.40 | 7.30 | 7.30 | 7.30 | 3.19 | 23,500 |   |  			
            | 10/6/2011 | +0.10 / +1.37% | 7.10 | 7.50 | 7.10 | 7.40 | 7.40 | 3.24 | 3,520 |   |  
            | 10/5/2011 | -0.10 / -1.35% | 7.60 | 7.60 | 7.30 | 7.30 | 7.30 | 3.19 | 36,900 |   |  			
            | 10/4/2011 | 0.00 / 0.00% | 7.50 | 7.50 | 7.40 | 7.40 | 7.40 | 3.24 | 26,210 |   |  
            | 10/3/2011 | -0.20 / -2.63% | 7.80 | 7.80 | 7.40 | 7.40 | 7.40 | 3.24 | 12,010 |   |  			
            | 9/30/2011 | +0.10 / +1.33% | 7.40 | 7.60 | 7.40 | 7.60 | 7.60 | 3.33 | 10,370 |   |  
            | 9/29/2011 | -0.10 / -1.32% | 7.50 | 7.60 | 7.50 | 7.50 | 7.50 | 3.28 | 36,370 |   |  			
            | 9/28/2011 | +0.20 / +2.70% | 7.70 | 7.70 | 7.40 | 7.60 | 7.60 | 3.33 | 56,780 |   |  
            | 9/27/2011 | 0.00 / 0.00% | 7.70 | 7.70 | 7.30 | 7.40 | 7.40 | 3.24 | 22,340 |   |  			
            | 9/26/2011 | -0.10 / -1.33% | 7.40 | 7.70 | 7.40 | 7.40 | 7.40 | 3.24 | 14,020 |   |  
            | 9/23/2011 | +0.30 / +4.17% | 7.50 | 7.50 | 7.40 | 7.50 | 7.50 | 3.28 | 69,730 |   |  			
            | 9/22/2011 | +0.30 / +4.35% | 7.10 | 7.20 | 7.10 | 7.20 | 7.20 | 3.15 | 9,090 |   |  
            | 9/21/2011 | -0.30 / -4.17% | 7.30 | 7.30 | 6.90 | 6.90 | 6.90 | 3.02 | 47,740 |   |  			
            | 9/20/2011 | -0.10 / -1.37% | 7.50 | 7.50 | 7.00 | 7.20 | 7.20 | 3.15 | 16,520 |   |  
            | 9/19/2011 | 0.00 / 0.00% | 7.20 | 7.40 | 7.20 | 7.30 | 7.30 | 3.19 | 29,000 |   |  			
            | 9/16/2011 | +0.10 / +1.39% | 7.20 | 7.40 | 6.90 | 7.30 | 7.30 | 3.19 | 45,550 |   |  
            | 9/15/2011 | -0.30 / -4.00% | 7.80 | 7.80 | 7.20 | 7.20 | 7.20 | 3.15 | 13,170 |   |  			
            | 9/14/2011 | +0.10 / +1.35% | 7.40 | 7.50 | 7.10 | 7.50 | 7.50 | 3.28 | 14,800 |   |  
            | 9/13/2011 | +0.20 / +2.78% | 7.40 | 7.50 | 7.40 | 7.40 | 7.40 | 3.24 | 62,280 |   |  			
            | 9/12/2011 | -0.20 / -2.70% | 7.10 | 7.40 | 7.10 | 7.20 | 7.20 | 3.15 | 3,380 |   |  
            | 9/9/2011 | +0.20 / +2.78% | 7.40 | 7.50 | 7.20 | 7.40 | 7.40 | 3.24 | 59,480 |   |  			
            | 9/8/2011 | +0.30 / +4.35% | 7.20 | 7.20 | 7.10 | 7.20 | 7.20 | 3.15 | 35,030 |   |  
            | 9/7/2011 | +0.30 / +4.55% | 6.90 | 6.90 | 6.80 | 6.90 | 6.90 | 3.02 | 85,290 |   |  |