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                    Closing price on 3/24/2010
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        |           
                
                    | Open | 14.20 |  
                    | High | 14.70 |  
                    | Low | 13.70 |  
                    | Volume | 271,370 |  
                    | Split-adjusted Price | 14.70 |  
                
             | 
 |  DDM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/24/2010 | +0.70 / +5.00% | 14.20 | 14.70 | 13.70 | 14.70 | 14.00 | 14.70 | 271,370 |   |  
            | 3/23/2010 | +0.60 / +4.48% | 13.50 | 14.00 | 13.40 | 14.00 | 13.73 | 14.00 | 478,480 |   |  			
            | 3/22/2010 | 0.00 / 0.00% | 12.70 | 13.40 | 12.50 | 13.40 | 13.00 | 13.40 | 324,720 |   |  
            | 3/19/2010 | +0.30 / +2.40% | 12.90 | 12.90 | 12.30 | 12.80 | 12.80 | 12.80 | 135,910 |   |  			
            | 3/18/2010 | +0.30 / +2.46% | 12.50 | 12.50 | 12.20 | 12.50 | 12.43 | 12.50 | 59,370 |   |  
            | 3/17/2010 | -0.60 / -4.69% | 12.80 | 12.90 | 12.20 | 12.20 | 12.50 | 12.20 | 74,710 |   |  			
            | 3/16/2010 | +0.10 / +0.79% | 12.80 | 13.30 | 12.50 | 12.80 | 12.85 | 12.80 | 367,650 |   |  
            | 3/15/2010 | 0.00 / 0.00% | 12.70 | 12.70 | 12.60 | 12.70 | 12.68 | 12.70 | 202,580 |   |  			
            | 3/12/2010 | +0.50 / +4.31% | 11.50 | 12.10 | 11.50 | 12.10 | 12.10 | 12.10 | 201,590 |   |  
            | 3/11/2010 | +0.10 / +0.87% | 11.40 | 11.70 | 11.40 | 11.60 | 11.53 | 11.60 | 82,060 |   |  			
            | 3/10/2010 | 0.00 / 0.00% | 11.30 | 11.60 | 11.30 | 11.50 | 11.60 | 11.50 | 27,210 |   |  
            | 3/9/2010 | +0.50 / +4.55% | 11.00 | 11.50 | 11.00 | 11.50 | 11.50 | 11.50 | 149,370 |   |  			
            | 3/8/2010 | 0.00 / 0.00% | 11.00 | 11.00 | 10.70 | 11.00 | 10.93 | 11.00 | 46,920 |   |  
            | 3/5/2010 | -0.20 / -1.83% | 10.80 | 11.00 | 10.70 | 10.70 | 10.70 | 10.70 | 29,520 |   |  			
            | 3/4/2010 | +0.20 / +1.87% | 11.00 | 11.20 | 10.70 | 10.90 | 10.70 | 10.90 | 43,250 |   |  
            | 3/3/2010 | 0.00 / 0.00% | 11.00 | 11.00 | 10.70 | 10.70 | 10.90 | 10.70 | 33,610 |   |  			
            | 3/2/2010 | -0.10 / -0.93% | 10.80 | 10.80 | 10.60 | 10.70 | 10.70 | 10.70 | 30,590 |   |  
            | 3/1/2010 | 0.00 / 0.00% | 10.80 | 11.00 | 10.80 | 10.80 | 10.85 | 10.80 | 16,140 |   |  			
            | 2/26/2010 | +0.10 / +0.93% | 11.00 | 11.00 | 10.60 | 10.90 | 10.90 | 10.90 | 12,150 |   |  
            | 2/25/2010 | -0.30 / -2.70% | 11.10 | 11.20 | 10.80 | 10.80 | 10.90 | 10.80 | 27,090 |   |  			
            | 2/24/2010 | +0.20 / +1.83% | 10.90 | 11.10 | 10.90 | 11.10 | 11.00 | 11.10 | 19,460 |   |  
            | 2/23/2010 | -0.50 / -4.39% | 11.40 | 11.40 | 10.90 | 10.90 | 11.10 | 10.90 | 58,220 |   |  			
            | 2/22/2010 | 0.00 / 0.00% | 11.50 | 11.50 | 11.30 | 11.40 | 11.43 | 11.40 | 4,250 |   |  
            | 2/12/2010 | 0.00 / 0.00% | 11.60 | 11.60 | 11.30 | 11.40 | 11.40 | 11.40 | 3,200 |   |  			
            | 2/11/2010 | +0.30 / +2.70% | 11.40 | 11.40 | 11.40 | 11.40 | 11.40 | 11.40 | 26,910 |   |  
            | 2/10/2010 | +0.10 / +0.91% | 10.80 | 11.40 | 10.80 | 11.10 | 11.40 | 11.10 | 17,020 |   |  			
            | 2/9/2010 | -0.30 / -2.65% | 11.00 | 11.30 | 11.00 | 11.00 | 11.10 | 11.00 | 19,880 |   |  
            | 2/8/2010 | 0.00 / 0.00% | 11.20 | 11.30 | 11.00 | 11.30 | 11.00 | 11.30 | 27,960 |   |  			
            | 2/5/2010 | +0.20 / +1.82% | 10.70 | 11.20 | 10.70 | 11.20 | 11.20 | 11.20 | 49,720 |   |  
            | 2/4/2010 | +0.20 / +1.85% | 11.20 | 11.20 | 10.80 | 11.00 | 11.20 | 11.00 | 18,860 |   |  |