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                    Closing price on 9/10/2009
                 |  |  
    
        |           
                
                    | Open | 13.30 |  
                    | High | 13.50 |  
                    | Low | 13.10 |  
                    | Volume | 85,200 |  
                    | Split-adjusted Price | 13.50 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/10/2009 | 0.00 / 0.00% | 13.30 | 13.50 | 13.10 | 13.50 | 13.31 | 13.50 | 85,200 |   |  
            | 9/9/2009 | 0.00 / 0.00% | 13.80 | 13.80 | 13.10 | 13.50 | 13.25 | 13.50 | 64,800 |   |  			
            | 9/8/2009 | +0.20 / +1.50% | 13.40 | 13.70 | 12.80 | 13.50 | 13.36 | 13.50 | 112,500 |   |  
            | 9/7/2009 | -0.70 / -5.00% | 13.50 | 13.70 | 13.30 | 13.30 | 13.37 | 13.30 | 78,100 |   |  			
            | 9/4/2009 | -0.40 / -2.78% | 14.00 | 14.70 | 13.80 | 14.00 | 14.22 | 14.00 | 312,700 |   |  
            | 9/3/2009 | +1.00 / +7.46% | 13.70 | 14.50 | 12.70 | 14.40 | 13.79 | 14.40 | 477,300 |   |  			
            | 9/1/2009 | +0.30 / +2.29% | 14.00 | 14.00 | 13.30 | 13.40 | 13.58 | 13.40 | 204,900 |   |  
            | 8/31/2009 | +0.70 / +5.65% | 13.10 | 13.10 | 12.70 | 13.10 | 13.07 | 13.10 | 237,200 |   |  			
            | 8/28/2009 | +0.80 / +6.90% | 11.70 | 12.40 | 11.70 | 12.40 | 12.33 | 12.40 | 337,600 |   |  
            | 8/27/2009 | 0.00 / 0.00% | 11.60 | 11.70 | 11.40 | 11.60 | 11.57 | 11.60 | 39,000 |   |  			
            | 8/26/2009 | -0.10 / -0.85% | 11.60 | 11.70 | 11.40 | 11.60 | 11.51 | 11.60 | 20,700 |   |  
            | 8/25/2009 | +0.20 / +1.74% | 11.50 | 11.70 | 11.20 | 11.70 | 11.54 | 11.70 | 35,800 |   |  			
            | 8/24/2009 | -0.10 / -0.86% | 11.70 | 11.70 | 11.40 | 11.50 | 11.55 | 11.50 | 39,400 |   |  
            | 8/21/2009 | 0.00 / 0.00% | 11.60 | 12.00 | 11.40 | 11.60 | 11.70 | 11.60 | 97,000 |   |  			
            | 8/20/2009 | -0.10 / -0.85% | 11.70 | 11.70 | 11.50 | 11.60 | 11.62 | 11.60 | 33,600 |   |  
            | 8/19/2009 | +0.40 / +3.54% | 11.50 | 11.70 | 11.50 | 11.70 | 11.60 | 11.70 | 56,800 |   |  			
            | 8/18/2009 | -0.20 / -1.74% | 11.00 | 11.60 | 11.00 | 11.30 | 11.38 | 11.30 | 57,500 |   |  
            | 8/17/2009 | -0.20 / -1.71% | 12.00 | 12.00 | 11.30 | 11.50 | 11.55 | 11.50 | 43,500 |   |  			
            | 8/14/2009 | -0.10 / -0.85% | 11.80 | 11.80 | 11.50 | 11.70 | 11.66 | 11.70 | 29,500 |   |  
            | 8/13/2009 | -0.60 / -4.84% | 13.10 | 13.10 | 11.80 | 11.80 | 12.12 | 11.80 | 37,400 |   |  			
            | 8/12/2009 | -0.40 / -3.13% | 12.40 | 12.40 | 12.40 | 12.40 | 12.40 | 12.40 | 95,300 |   |  
            | 8/11/2009 | +0.90 / +7.56% | 12.00 | 12.80 | 11.80 | 12.80 | 12.65 | 12.80 | 178,400 |   |  			
            | 8/10/2009 | 0.00 / 0.00% | 11.60 | 12.00 | 11.50 | 11.90 | 11.97 | 11.90 | 45,100 |   |  
            | 8/7/2009 | -0.10 / -0.83% | 11.80 | 11.90 | 11.60 | 11.90 | 11.82 | 11.90 | 19,600 |   |  			
            | 8/6/2009 | 0.00 / 0.00% | 11.90 | 12.30 | 11.70 | 12.00 | 12.04 | 12.00 | 41,200 |   |  
            | 8/5/2009 | -0.20 / -1.64% | 12.10 | 12.40 | 11.80 | 12.00 | 12.05 | 12.00 | 24,000 |   |  			
            | 8/4/2009 | -0.10 / -0.81% | 12.50 | 12.80 | 12.10 | 12.20 | 12.37 | 12.20 | 33,900 |   |  
            | 8/3/2009 | +0.60 / +5.13% | 12.30 | 12.40 | 11.80 | 12.30 | 12.09 | 12.30 | 75,400 |   |  			
            | 7/31/2009 | +0.60 / +5.41% | 11.00 | 11.70 | 11.00 | 11.70 | 11.56 | 11.70 | 70,600 |   |  
            | 7/30/2009 | -0.30 / -2.63% | 11.20 | 11.30 | 10.70 | 11.10 | 11.00 | 11.10 | 15,000 |   |  |