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                    Closing price on 4/6/2011
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        |           
                
                    | Open | 28.50 |  
                    | High | 28.50 |  
                    | Low | 28.50 |  
                    | Volume | 1,110 |  
                    | Split-adjusted Price | 2.82 |  
                
             | 
 |  HDC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/6/2011 | 0.00 / 0.00% | 28.50 | 28.50 | 28.50 | 28.50 | 28.50 | 2.82 | 1,110 |   |  
            | 4/5/2011 | +0.30 / +1.06% | 28.00 | 28.50 | 28.00 | 28.50 | 28.50 | 2.82 | 1,110 |   |  			
            | 4/4/2011 | -1.30 / -4.41% | 29.00 | 29.00 | 28.20 | 28.20 | 28.20 | 2.79 | 1,000 |   |  
            | 4/1/2011 | +0.30 / +1.03% | 29.50 | 29.50 | 29.50 | 29.50 | 29.50 | 2.92 | 2,000 |   |  			
            | 3/31/2011 | +0.70 / +2.46% | 28.00 | 29.20 | 28.00 | 29.20 | 29.20 | 2.89 | 3,150 |   |  
            | 3/30/2011 | +0.30 / +1.06% | 27.00 | 28.50 | 27.00 | 28.50 | 28.50 | 2.82 | 3,890 |   |  			
            | 3/29/2011 | -0.40 / -1.40% | 28.80 | 28.80 | 28.20 | 28.20 | 28.20 | 2.79 | 12,300 |   |  
            | 3/28/2011 | -0.90 / -3.05% | 29.00 | 29.50 | 28.60 | 28.60 | 28.60 | 2.83 | 18,300 |   |  			
            | 3/25/2011 | +1.00 / +3.51% | 28.70 | 29.50 | 28.70 | 29.50 | 29.50 | 2.92 | 3,010 |   |  
            | 3/24/2011 | -1.50 / -5.00% | 29.80 | 29.90 | 28.50 | 28.50 | 28.50 | 2.82 | 12,810 |   |  			
            | 3/23/2011 | +0.10 / +0.33% | 29.90 | 30.00 | 29.70 | 30.00 | 30.00 | 2.97 | 15,510 |   |  
            | 3/22/2011 | -0.10 / -0.33% | 30.50 | 30.50 | 29.80 | 29.90 | 29.90 | 2.96 | 10,460 |   |  			
            | 3/21/2011 | -0.80 / -2.60% | 30.00 | 30.50 | 30.00 | 30.00 | 30.00 | 2.97 | 14,210 |   |  
            | 3/18/2011 | +0.40 / +1.32% | 31.00 | 31.00 | 30.00 | 30.80 | 30.80 | 3.05 | 6,910 |   |  			
            | 3/17/2011 | +0.80 / +2.70% | 30.50 | 30.50 | 29.00 | 30.40 | 30.40 | 3.01 | 15,020 |   |  
            | 3/16/2011 | -0.40 / -1.33% | 31.00 | 31.00 | 29.60 | 29.60 | 29.60 | 2.93 | 13,320 |   |  			
            | 3/15/2011 | -1.40 / -4.46% | 29.90 | 30.20 | 29.90 | 30.00 | 30.00 | 2.97 | 26,430 |   |  
            | 3/14/2011 | -0.40 / -1.26% | 30.30 | 31.80 | 30.30 | 31.40 | 31.40 | 3.11 | 14,190 |   |  			
            | 3/11/2011 | +0.70 / +2.25% | 32.40 | 32.40 | 31.50 | 31.80 | 31.80 | 3.15 | 23,410 |   |  
            | 3/10/2011 | +1.10 / +3.67% | 31.50 | 31.50 | 30.50 | 31.10 | 31.10 | 3.08 | 14,360 |   |  			
            | 3/9/2011 | -1.40 / -4.46% | 31.70 | 31.70 | 30.00 | 30.00 | 30.00 | 2.97 | 16,570 |   |  
            | 3/8/2011 | +0.40 / +1.29% | 31.00 | 31.40 | 31.00 | 31.40 | 31.40 | 3.11 | 8,230 |   |  			
            | 3/7/2011 | +0.60 / +1.97% | 30.40 | 31.00 | 30.40 | 31.00 | 31.00 | 3.07 | 11,320 |   |  
            | 3/4/2011 | -1.60 / -5.00% | 32.30 | 32.30 | 30.40 | 30.40 | 30.40 | 3.01 | 34,510 |   |  			
            | 3/3/2011 | +0.30 / +0.95% | 30.20 | 32.00 | 30.20 | 32.00 | 32.00 | 3.17 | 3,090 |   |  
            | 3/2/2011 | -1.60 / -4.80% | 31.80 | 32.70 | 31.70 | 31.70 | 31.70 | 3.14 | 42,650 |   |  			
            | 3/1/2011 | +0.30 / +0.91% | 32.60 | 33.30 | 32.60 | 33.30 | 33.30 | 3.30 | 460 |   |  
            | 2/28/2011 | +0.60 / +1.85% | 33.50 | 33.50 | 33.00 | 33.00 | 33.00 | 3.27 | 19,000 |   |  			
            | 2/25/2011 | +1.40 / +4.52% | 32.50 | 32.50 | 32.00 | 32.40 | 32.40 | 3.21 | 25,590 |   |  
            | 2/24/2011 | -1.60 / -4.91% | 31.10 | 31.50 | 31.00 | 31.00 | 31.00 | 3.07 | 122,370 |   |  |