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                    Closing price on 4/3/2009
                 |  |  
    
        |           
                
                    | Open | 8.00 |  
                    | High | 8.10 |  
                    | Low | 8.00 |  
                    | Volume | 67,800 |  
                    | Split-adjusted Price | 8.10 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/3/2009 | +0.50 / +6.58% | 8.00 | 8.10 | 8.00 | 8.10 | 8.06 | 8.10 | 67,800 |   |  
            | 4/2/2009 | -0.10 / -1.30% | 7.80 | 7.90 | 7.50 | 7.60 | 7.63 | 7.60 | 9,200 |   |  			
            | 4/1/2009 | +0.20 / +2.67% | 7.80 | 7.80 | 7.50 | 7.70 | 7.65 | 7.70 | 13,200 |   |  
            | 3/31/2009 | 0.00 / 0.00% | 7.40 | 7.50 | 7.30 | 7.50 | 7.39 | 7.50 | 7,200 |   |  			
            | 3/30/2009 | 0.00 / 0.00% | 7.60 | 7.60 | 7.30 | 7.50 | 7.37 | 7.50 | 4,300 |   |  
            | 3/27/2009 | -0.20 / -2.60% | 7.50 | 7.70 | 7.50 | 7.50 | 7.59 | 7.50 | 43,700 |   |  			
            | 3/26/2009 | +0.10 / +1.32% | 7.70 | 7.70 | 7.40 | 7.70 | 7.53 | 7.70 | 24,000 |   |  
            | 3/25/2009 | -0.10 / -1.30% | 7.70 | 7.70 | 7.60 | 7.60 | 7.65 | 7.60 | 13,100 |   |  			
            | 3/24/2009 | +0.60 / +8.45% | 7.70 | 7.70 | 7.50 | 7.70 | 7.69 | 7.70 | 18,400 |   |  
            | 3/23/2009 | -0.50 / -6.58% | 7.60 | 7.60 | 7.10 | 7.10 | 7.21 | 7.10 | 11,400 |   |  			
            | 3/20/2009 | -0.50 / -6.17% | 7.50 | 7.90 | 7.50 | 7.60 | 7.57 | 7.60 | 26,600 |   |  
            | 3/19/2009 | +0.30 / +3.85% | 8.10 | 8.30 | 7.60 | 8.10 | 7.93 | 8.10 | 22,700 |   |  			
            | 3/18/2009 | +0.40 / +5.41% | 7.80 | 7.80 | 7.60 | 7.80 | 7.80 | 7.80 | 94,000 |   |  
            | 3/17/2009 | +0.30 / +4.23% | 7.10 | 7.40 | 7.10 | 7.40 | 7.28 | 7.40 | 10,100 |   |  			
            | 3/16/2009 | +0.10 / +1.43% | 7.20 | 7.20 | 7.00 | 7.10 | 7.09 | 7.10 | 6,200 |   |  
            | 3/13/2009 | -0.10 / -1.41% | 7.40 | 7.60 | 6.90 | 7.00 | 7.09 | 7.00 | 12,900 |   |  			
            | 3/12/2009 | -0.10 / -1.39% | 7.70 | 7.70 | 6.80 | 7.10 | 7.18 | 7.10 | 48,900 |   |  
            | 3/11/2009 | +0.30 / +4.35% | 7.10 | 7.20 | 7.10 | 7.20 | 7.17 | 7.20 | 13,000 |   |  			
            | 3/10/2009 | +0.30 / +4.55% | 6.80 | 6.90 | 6.70 | 6.90 | 6.83 | 6.90 | 17,500 |   |  
            | 3/9/2009 | +0.30 / +4.76% | 6.30 | 6.60 | 6.30 | 6.60 | 6.49 | 6.60 | 18,900 |   |  			
            | 3/6/2009 | -0.10 / -1.56% | 6.50 | 6.50 | 6.20 | 6.30 | 6.23 | 6.30 | 11,400 |   |  
            | 3/5/2009 | +0.30 / +4.92% | 6.50 | 6.60 | 6.20 | 6.40 | 6.39 | 6.40 | 9,600 |   |  			
            | 3/4/2009 | 0.00 / 0.00% | 6.30 | 6.40 | 6.10 | 6.10 | 6.24 | 6.10 | 4,100 |   |  
            | 3/3/2009 | -0.10 / -1.61% | 6.20 | 6.20 | 6.00 | 6.10 | 6.10 | 6.10 | 6,900 |   |  			
            | 3/2/2009 | +0.10 / +1.64% | 6.10 | 6.20 | 6.00 | 6.20 | 6.02 | 6.20 | 8,500 |   |  
            | 2/27/2009 | +0.10 / +1.67% | 6.30 | 6.30 | 6.00 | 6.10 | 6.04 | 6.10 | 9,400 |   |  			
            | 2/26/2009 | +0.10 / +1.69% | 6.30 | 6.30 | 5.90 | 6.00 | 6.03 | 6.00 | 9,700 |   |  
            | 2/25/2009 | +0.30 / +5.36% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 7,500 |   |  			
            | 2/24/2009 | -0.40 / -6.67% | 5.60 | 5.80 | 5.60 | 5.60 | 5.61 | 5.60 | 8,800 |   |  
            | 2/23/2009 | -0.20 / -3.23% | 5.70 | 6.00 | 5.60 | 6.00 | 5.90 | 6.00 | 13,700 |   |  |