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                    Closing price on 12/23/2009
                 |  |  
    
        |           
                
                    | Open | 18.20 |  
                    | High | 19.90 |  
                    | Low | 17.40 |  
                    | Volume | 204,000 |  
                    | Split-adjusted Price | 19.90 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/23/2009 | +1.70 / +9.34% | 18.20 | 19.90 | 17.40 | 19.90 | 19.13 | 19.90 | 204,000 |   |  
            | 12/22/2009 | +0.20 / +1.11% | 18.60 | 19.20 | 18.00 | 18.20 | 18.64 | 18.20 | 153,800 |   |  			
            | 12/21/2009 | +0.90 / +5.26% | 17.90 | 18.00 | 17.00 | 18.00 | 18.00 | 18.00 | 40,300 |   |  
            | 12/18/2009 | +1.10 / +6.88% | 16.00 | 17.10 | 16.00 | 17.10 | 16.89 | 17.10 | 126,000 |   |  			
            | 12/17/2009 | -1.00 / -5.88% | 16.00 | 16.50 | 16.00 | 16.00 | 16.05 | 16.00 | 70,500 |   |  
            | 12/16/2009 | -0.50 / -2.86% | 18.00 | 18.00 | 17.00 | 17.00 | 17.05 | 17.00 | 33,900 |   |  			
            | 12/15/2009 | -1.10 / -5.91% | 19.00 | 19.00 | 17.50 | 17.50 | 18.19 | 17.50 | 63,900 |   |  
            | 12/14/2009 | +0.80 / +4.49% | 16.70 | 19.00 | 16.70 | 18.60 | 18.17 | 18.60 | 138,400 |   |  			
            | 12/11/2009 | -0.80 / -4.30% | 19.00 | 19.00 | 17.80 | 17.80 | 17.90 | 17.80 | 45,500 |   |  
            | 12/10/2009 | -1.40 / -7.00% | 18.80 | 21.00 | 18.60 | 18.60 | 19.12 | 18.60 | 102,500 |   |  			
            | 12/9/2009 | -1.20 / -5.66% | 21.20 | 21.20 | 20.00 | 20.00 | 20.01 | 20.00 | 48,500 |   |  
            | 12/8/2009 | -1.80 / -7.83% | 22.70 | 22.70 | 21.20 | 21.20 | 21.52 | 21.20 | 81,300 |   |  			
            | 12/7/2009 | +0.20 / +0.88% | 23.50 | 23.50 | 21.80 | 23.00 | 22.71 | 23.00 | 54,900 |   |  
            | 12/4/2009 | -0.10 / -0.44% | 22.80 | 23.40 | 22.50 | 22.80 | 22.88 | 22.80 | 54,600 |   |  			
            | 12/3/2009 | -0.20 / -0.87% | 22.50 | 23.60 | 22.00 | 22.90 | 22.82 | 22.90 | 85,400 |   |  
            | 12/2/2009 | -1.60 / -6.48% | 26.20 | 26.30 | 22.90 | 23.10 | 23.65 | 23.10 | 127,800 |   |  			
            | 12/1/2009 | +0.70 / +2.92% | 23.60 | 24.70 | 23.60 | 24.70 | 24.63 | 24.70 | 128,100 |   |  
            | 11/30/2009 | +2.20 / +10.09% | 22.80 | 24.00 | 22.00 | 24.00 | 23.06 | 24.00 | 179,600 |   |  			
            | 11/27/2009 | -1.40 / -6.03% | 21.60 | 24.80 | 21.60 | 21.80 | 22.48 | 21.80 | 293,200 |   |  
            | 11/26/2009 | -1.40 / -5.69% | 23.50 | 23.50 | 23.20 | 23.20 | 23.22 | 23.20 | 12,400 |   |  			
            | 11/25/2009 | -1.20 / -4.65% | 25.10 | 26.10 | 24.60 | 24.60 | 24.89 | 24.60 | 168,500 |   |  
            | 11/24/2009 | -0.70 / -2.64% | 26.30 | 27.10 | 25.80 | 25.80 | 26.38 | 25.80 | 137,600 |   |  			
            | 11/23/2009 | -1.50 / -5.36% | 28.40 | 29.00 | 26.30 | 26.50 | 27.55 | 26.50 | 153,800 |   |  
            | 11/20/2009 | -0.70 / -2.44% | 28.70 | 29.50 | 27.30 | 28.00 | 28.15 | 28.00 | 135,800 |   |  			
            | 11/19/2009 | +0.80 / +2.87% | 28.30 | 29.80 | 28.00 | 28.70 | 28.65 | 28.70 | 145,900 |   |  
            | 11/18/2009 | -1.80 / -6.06% | 28.50 | 29.50 | 27.80 | 27.90 | 28.25 | 27.90 | 253,000 |   |  			
            | 11/17/2009 | +0.90 / +3.13% | 30.60 | 30.70 | 28.50 | 29.70 | 29.79 | 29.70 | 239,700 |   |  
            | 11/16/2009 | +1.80 / +6.67% | 27.50 | 28.80 | 27.50 | 28.80 | 28.67 | 28.80 | 361,000 |   |  			
            | 11/13/2009 | -0.10 / -0.37% | 26.50 | 27.50 | 26.00 | 27.00 | 26.96 | 27.00 | 150,900 |   |  
            | 11/12/2009 | +0.80 / +3.04% | 26.90 | 27.10 | 26.00 | 27.10 | 26.94 | 27.10 | 229,600 |   |  |