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                    Closing price on 6/8/2010
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                    | Open | 10.70 |  
                    | High | 10.80 |  
                    | Low | 10.70 |  
                    | Volume | 20,580 |  
                    | Split-adjusted Price | 10.70 |  
                
             | 
 |  DDM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/8/2010 | 0.00 / 0.00% | 10.70 | 10.80 | 10.70 | 10.70 | 10.73 | 10.70 | 20,580 |   |  
            | 6/7/2010 | 0.00 / 0.00% | 11.00 | 11.00 | 10.70 | 10.70 | 10.70 | 10.70 | 36,160 |   |  			
            | 6/4/2010 | -0.20 / -1.77% | 11.40 | 11.40 | 11.10 | 11.10 | 11.10 | 11.10 | 28,320 |   |  
            | 6/3/2010 | 0.00 / 0.00% | 11.60 | 11.60 | 11.30 | 11.30 | 11.45 | 11.30 | 28,840 |   |  			
            | 6/2/2010 | -0.10 / -0.88% | 11.30 | 11.30 | 11.20 | 11.30 | 11.30 | 11.30 | 9,460 |   |  
            | 6/1/2010 | +0.10 / +0.88% | 11.00 | 11.40 | 11.00 | 11.40 | 11.30 | 11.40 | 16,430 |   |  			
            | 5/31/2010 | 0.00 / 0.00% | 11.60 | 11.60 | 11.20 | 11.30 | 11.40 | 11.30 | 16,810 |   |  
            | 5/28/2010 | +0.50 / +4.55% | 11.50 | 11.50 | 11.40 | 11.50 | 11.50 | 11.50 | 78,800 |   |  			
            | 5/27/2010 | -0.20 / -1.79% | 11.20 | 11.20 | 11.00 | 11.00 | 11.10 | 11.00 | 31,940 |   |  
            | 5/26/2010 | +0.50 / +4.67% | 11.00 | 11.20 | 11.00 | 11.20 | 11.00 | 11.20 | 59,490 |   |  			
            | 5/25/2010 | -0.10 / -0.93% | 10.90 | 11.00 | 10.70 | 10.70 | 10.83 | 10.70 | 71,820 |   |  
            | 5/24/2010 | 0.00 / 0.00% | 11.00 | 11.00 | 10.60 | 10.80 | 10.70 | 10.80 | 23,010 |   |  			
            | 5/21/2010 | -0.50 / -4.46% | 10.70 | 11.00 | 10.70 | 10.70 | 10.70 | 10.70 | 140,550 |   |  
            | 5/20/2010 | 0.00 / 0.00% | 10.70 | 11.20 | 10.70 | 11.20 | 10.70 | 11.20 | 118,790 |   |  			
            | 5/19/2010 | -0.50 / -4.27% | 11.70 | 11.80 | 11.20 | 11.20 | 11.20 | 11.20 | 91,810 |   |  
            | 5/18/2010 | -0.30 / -2.50% | 11.80 | 12.00 | 11.70 | 11.70 | 11.80 | 11.70 | 82,900 |   |  			
            | 5/17/2010 | 0.00 / 0.00% | 12.50 | 12.50 | 12.00 | 12.00 | 12.25 | 12.00 | 92,020 |   |  
            | 5/14/2010 | +0.10 / +0.81% | 12.40 | 12.80 | 12.10 | 12.50 | 12.50 | 12.50 | 35,480 |   |  			
            | 5/13/2010 | +0.10 / +0.81% | 12.50 | 12.50 | 12.10 | 12.40 | 12.50 | 12.40 | 87,880 |   |  
            | 5/12/2010 | -0.30 / -2.38% | 12.50 | 12.60 | 12.00 | 12.30 | 12.40 | 12.30 | 210,130 |   |  			
            | 5/11/2010 | -0.50 / -3.82% | 13.20 | 13.20 | 12.60 | 12.60 | 12.90 | 12.60 | 158,710 |   |  
            | 5/10/2010 | 0.00 / 0.00% | 13.30 | 13.30 | 13.10 | 13.10 | 13.20 | 13.10 | 147,790 |   |  			
            | 5/7/2010 | -0.20 / -1.44% | 13.50 | 14.00 | 13.30 | 13.70 | 13.70 | 13.70 | 220,950 |   |  
            | 5/6/2010 | +0.60 / +4.51% | 13.50 | 13.90 | 13.50 | 13.90 | 13.70 | 13.90 | 385,190 |   |  			
            | 5/5/2010 | +0.30 / +2.31% | 13.40 | 13.60 | 13.10 | 13.30 | 13.35 | 13.30 | 338,050 |   |  
            | 5/4/2010 | 0.00 / 0.00% | 13.20 | 13.70 | 13.00 | 13.00 | 13.30 | 13.00 | 198,080 |   |  			
            | 4/29/2010 | +0.60 / +4.72% | 12.80 | 13.30 | 12.60 | 13.30 | 13.30 | 13.30 | 305,720 |   |  
            | 4/28/2010 | -0.20 / -1.55% | 12.90 | 12.90 | 12.30 | 12.70 | 12.70 | 12.70 | 76,430 |   |  			
            | 4/27/2010 | -0.10 / -0.77% | 12.70 | 12.90 | 12.50 | 12.90 | 12.70 | 12.90 | 184,250 |   |  
            | 4/26/2010 | 0.00 / 0.00% | 12.80 | 13.20 | 12.70 | 13.00 | 12.90 | 13.00 | 58,580 |   |  |