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                    Closing price on 4/8/2010
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        |           
                
                    | Open | 28.80 |  
                    | High | 28.90 |  
                    | Low | 28.50 |  
                    | Volume | 8,100 |  
                    | Split-adjusted Price | 7.56 |  
                
             | 
 |  SDC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/8/2010 | +1.70 / +6.25% | 28.80 | 28.90 | 28.50 | 28.90 | 28.90 | 7.56 | 8,100 |   |  
            | 4/7/2010 | +0.10 / +0.37% | 27.00 | 27.20 | 27.00 | 27.20 | 27.20 | 7.11 | 4,700 |   |  			
            | 4/6/2010 | -1.20 / -4.24% | 27.10 | 27.10 | 27.00 | 27.10 | 27.10 | 7.09 | 1,700 |   |  
            | 4/5/2010 | +0.50 / +1.80% | 28.20 | 28.30 | 28.20 | 28.30 | 28.30 | 7.40 | 1,100 |   |  			
            | 4/2/2010 | -0.40 / -1.42% | 27.80 | 27.80 | 27.80 | 27.80 | 27.80 | 7.27 | 0 |   |  
            | 4/1/2010 | +1.40 / +5.22% | 26.50 | 28.20 | 26.50 | 28.20 | 28.20 | 7.37 | 3,800 |   |  			
            | 3/31/2010 | -0.20 / -0.74% | 26.60 | 27.00 | 26.10 | 26.80 | 26.80 | 7.01 | 6,500 |   |  
            | 3/30/2010 | -0.20 / -0.74% | 27.10 | 27.10 | 26.20 | 27.00 | 27.00 | 7.06 | 2,700 |   |  			
            | 3/29/2010 | -0.10 / -0.37% | 27.00 | 27.20 | 27.00 | 27.20 | 27.20 | 7.11 | 300 |   |  
            | 3/26/2010 | +0.30 / +1.11% | 27.30 | 27.30 | 27.30 | 27.30 | 27.30 | 7.14 | 0 |   |  			
            | 3/25/2010 | -1.00 / -3.57% | 27.50 | 27.50 | 27.00 | 27.00 | 27.00 | 7.06 | 7,400 |   |  
            | 3/24/2010 | -1.90 / -6.35% | 28.40 | 28.40 | 28.00 | 28.00 | 28.00 | 7.32 | 7,800 |   |  			
            | 3/23/2010 | -0.10 / -0.33% | 29.50 | 29.90 | 28.20 | 29.90 | 29.90 | 7.82 | 400 |   |  
            | 3/22/2010 | 0.00 / 0.00% | 30.00 | 30.00 | 30.00 | 30.00 | 30.00 | 7.85 | 0 |   |  			
            | 3/19/2010 | -0.30 / -0.99% | 30.00 | 30.00 | 30.00 | 30.00 | 30.00 | 7.85 | 400 |   |  
            | 3/18/2010 | +2.30 / +8.21% | 29.90 | 30.30 | 29.90 | 30.30 | 30.30 | 7.92 | 3,400 |   |  			
            | 3/17/2010 | -3.00 / -9.68% | 28.70 | 28.70 | 28.00 | 28.00 | 28.00 | 7.32 | 3,000 |   |  
            | 3/16/2010 | +0.90 / +2.99% | 28.00 | 31.00 | 28.00 | 31.00 | 31.00 | 8.11 | 6,800 |   |  			
            | 3/15/2010 | +1.10 / +3.79% | 28.70 | 30.10 | 28.50 | 30.10 | 30.10 | 7.87 | 9,700 |   |  
            | 3/12/2010 | 0.00 / 0.00% | 28.00 | 29.00 | 28.00 | 29.00 | 29.00 | 7.58 | 1,200 |   |  			
            | 3/11/2010 | +0.10 / +0.35% | 29.00 | 29.00 | 29.00 | 29.00 | 29.00 | 7.58 | 400 |   |  
            | 3/10/2010 | -0.30 / -1.03% | 28.20 | 28.90 | 28.10 | 28.90 | 28.90 | 7.56 | 3,700 |   |  			
            | 3/9/2010 | +0.20 / +0.69% | 29.40 | 29.40 | 28.50 | 29.20 | 29.20 | 7.64 | 3,000 |   |  
            | 3/8/2010 | -0.60 / -2.03% | 30.70 | 30.70 | 29.00 | 29.00 | 29.00 | 7.58 | 3,300 |   |  			
            | 3/5/2010 | -0.30 / -1.00% | 29.60 | 29.60 | 29.60 | 29.60 | 29.60 | 7.74 | 1,100 |   |  
            | 3/4/2010 | +1.90 / +6.79% | 29.80 | 29.90 | 29.50 | 29.90 | 29.90 | 7.82 | 5,700 |   |  			
            | 3/3/2010 | +0.10 / +0.36% | 28.00 | 28.00 | 28.00 | 28.00 | 28.00 | 7.32 | 700 |   |  
            | 3/2/2010 | +0.60 / +2.20% | 27.00 | 29.00 | 27.00 | 27.90 | 27.90 | 7.30 | 900 |   |  			
            | 3/1/2010 | +0.20 / +0.74% | 27.30 | 27.30 | 27.30 | 27.30 | 27.30 | 7.14 | 100 |   |  
            | 2/26/2010 | +1.50 / +5.86% | 28.40 | 28.40 | 27.10 | 27.10 | 27.10 | 7.09 | 700 |   |  |