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                    Closing price on 5/6/2010
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        |           
                
                    | Open | 13.50 |  
                    | High | 13.90 |  
                    | Low | 13.50 |  
                    | Volume | 385,190 |  
                    | Split-adjusted Price | 13.90 |  
                
             | 
 |  DDM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 4/22/2010 | -0.60 / -4.35% | 13.50 | 13.70 | 13.20 | 13.20 | 13.20 | 13.20 | 159,120 |   |  			
            | 4/21/2010 | +0.60 / +4.55% | 13.80 | 13.80 | 13.60 | 13.80 | 13.75 | 13.80 | 180,230 |   |  
            | 4/20/2010 | +0.60 / +4.76% | 12.70 | 13.20 | 12.70 | 13.20 | 12.95 | 13.20 | 486,270 |   |  			
            | 4/19/2010 | 0.00 / 0.00% | 12.70 | 12.70 | 12.50 | 12.60 | 12.63 | 12.60 | 104,260 |   |  
            | 4/16/2010 | 0.00 / 0.00% | 12.70 | 12.90 | 12.60 | 12.70 | 12.70 | 12.70 | 223,410 |   |  			
            | 4/15/2010 | +0.10 / +0.79% | 12.50 | 13.00 | 12.50 | 12.70 | 12.70 | 12.70 | 197,400 |   |  
            | 4/14/2010 | -0.30 / -2.33% | 12.90 | 12.90 | 12.60 | 12.60 | 12.70 | 12.60 | 18,230 |   |  			
            | 4/13/2010 | 0.00 / 0.00% | 12.90 | 12.90 | 12.30 | 12.90 | 12.60 | 12.90 | 125,320 |   |  
            | 4/12/2010 | 0.00 / 0.00% | 12.90 | 12.90 | 12.90 | 12.90 | 12.90 | 12.90 | 88,540 |   |  			
            | 4/9/2010 | 0.00 / 0.00% | 13.00 | 13.10 | 12.50 | 12.90 | 12.90 | 12.90 | 86,190 |   |  
            | 4/8/2010 | +0.60 / +4.88% | 12.70 | 12.90 | 12.60 | 12.90 | 12.90 | 12.90 | 108,660 |   |  			
            | 4/7/2010 | -0.30 / -2.38% | 12.40 | 13.00 | 12.20 | 12.30 | 12.90 | 12.30 | 40,560 |   |  
            | 4/6/2010 | -0.20 / -1.56% | 12.80 | 13.10 | 12.60 | 12.60 | 12.78 | 12.60 | 57,950 |   |  			
            | 4/5/2010 | 0.00 / 0.00% | 12.20 | 12.80 | 12.20 | 12.80 | 12.60 | 12.80 | 66,590 |   |  
            | 4/2/2010 | -0.20 / -1.61% | 12.20 | 12.40 | 12.00 | 12.20 | 12.20 | 12.20 | 140,360 |   |  			
            | 4/1/2010 | -0.40 / -3.13% | 12.90 | 12.90 | 12.40 | 12.40 | 12.65 | 12.40 | 43,850 |   |  
            | 3/31/2010 | -0.60 / -4.48% | 12.80 | 13.00 | 12.80 | 12.80 | 12.85 | 12.80 | 184,690 |   |  			
            | 3/30/2010 | -0.70 / -4.96% | 13.50 | 13.50 | 13.40 | 13.40 | 13.45 | 13.40 | 72,540 |   |  
            | 3/29/2010 | 0.00 / 0.00% | 13.30 | 14.20 | 13.30 | 14.10 | 13.40 | 14.10 | 480,330 |   |  			
            | 3/26/2010 | 0.00 / 0.00% | 13.60 | 14.00 | 13.30 | 14.00 | 14.00 | 14.00 | 171,590 |   |  
            | 3/25/2010 | -0.70 / -4.76% | 15.00 | 15.00 | 14.00 | 14.00 | 14.00 | 14.00 | 201,790 |   |  			
            | 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 |   |  |