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                    Closing price on 11/29/2010
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                    | Open | 12.50 |  
                    | High | 13.30 |  
                    | Low | 12.30 |  
                    | Volume | 201,000 |  
                    | Split-adjusted Price | 13.30 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/29/2010 | +0.80 / +6.40% | 12.50 | 13.30 | 12.30 | 13.30 | 12.99 | 13.30 | 201,000 |   |  
            | 11/26/2010 | +0.40 / +3.31% | 12.10 | 12.80 | 12.00 | 12.50 | 12.52 | 12.50 | 122,700 |   |  			
            | 11/25/2010 | +0.60 / +5.22% | 11.40 | 12.10 | 11.40 | 12.10 | 12.02 | 12.10 | 140,500 |   |  
            | 11/24/2010 | -0.10 / -0.86% | 10.90 | 11.70 | 10.90 | 11.50 | 11.37 | 11.50 | 45,800 |   |  			
            | 11/23/2010 | +0.10 / +0.87% | 11.50 | 11.60 | 11.40 | 11.60 | 11.54 | 11.60 | 24,300 |   |  
            | 11/22/2010 | +0.10 / +0.88% | 11.00 | 11.50 | 11.00 | 11.50 | 11.28 | 11.50 | 30,900 |   |  			
            | 11/19/2010 | -0.80 / -6.56% | 12.40 | 12.40 | 11.40 | 11.40 | 11.71 | 11.40 | 47,700 |   |  
            | 11/18/2010 | +0.70 / +6.09% | 11.80 | 12.30 | 11.80 | 12.20 | 12.19 | 12.20 | 83,600 |   |  			
            | 11/17/2010 | +0.10 / +0.88% | 11.00 | 11.70 | 11.00 | 11.50 | 11.47 | 11.50 | 26,100 |   |  
            | 11/16/2010 | -0.20 / -1.72% | 11.80 | 11.90 | 11.00 | 11.40 | 11.25 | 11.40 | 42,400 |   |  			
            | 11/15/2010 | +0.20 / +1.75% | 12.00 | 12.20 | 11.40 | 11.60 | 11.76 | 11.60 | 66,300 |   |  
            | 11/12/2010 | -0.60 / -5.00% | 12.30 | 12.30 | 11.30 | 11.40 | 11.52 | 11.40 | 73,500 |   |  			
            | 11/11/2010 | -0.40 / -3.23% | 12.20 | 12.20 | 11.90 | 12.00 | 12.05 | 12.00 | 58,600 |   |  
            | 11/10/2010 | +0.10 / +0.81% | 12.30 | 12.80 | 12.20 | 12.40 | 12.33 | 12.40 | 46,700 |   |  			
            | 11/9/2010 | -0.70 / -5.38% | 12.60 | 12.60 | 12.20 | 12.30 | 12.30 | 12.30 | 45,900 |   |  
            | 11/8/2010 | +0.30 / +2.36% | 12.60 | 13.40 | 12.60 | 13.00 | 13.05 | 13.00 | 166,000 |   |  			
            | 11/5/2010 | +0.60 / +4.96% | 12.60 | 12.70 | 12.50 | 12.70 | 12.65 | 12.70 | 67,400 |   |  
            | 11/4/2010 | +0.10 / +0.83% | 11.80 | 12.20 | 11.70 | 12.10 | 11.93 | 12.10 | 87,400 |   |  			
            | 11/3/2010 | -0.30 / -2.44% | 12.40 | 12.40 | 11.70 | 12.00 | 11.94 | 12.00 | 70,000 |   |  
            | 11/2/2010 | -0.30 / -2.38% | 12.50 | 12.60 | 12.10 | 12.30 | 12.27 | 12.30 | 53,600 |   |  			
            | 11/1/2010 | -0.40 / -3.08% | 13.00 | 13.30 | 12.50 | 12.60 | 12.83 | 12.60 | 35,900 |   |  
            | 10/29/2010 | 0.00 / 0.00% | 13.30 | 13.40 | 12.80 | 13.00 | 12.99 | 13.00 | 49,000 |   |  			
            | 10/28/2010 | -0.10 / -0.76% | 13.10 | 13.40 | 12.90 | 13.00 | 13.10 | 13.00 | 26,300 |   |  
            | 10/27/2010 | -0.50 / -3.68% | 13.90 | 14.00 | 13.10 | 13.10 | 13.55 | 13.10 | 48,700 |   |  			
            | 10/26/2010 | +0.50 / +3.82% | 13.00 | 13.60 | 13.00 | 13.60 | 13.57 | 13.60 | 49,800 |   |  
            | 10/25/2010 | +0.20 / +1.55% | 13.20 | 13.20 | 12.40 | 13.10 | 12.82 | 13.10 | 37,100 |   |  			
            | 10/22/2010 | 0.00 / 0.00% | 13.20 | 13.20 | 12.70 | 12.90 | 12.91 | 12.90 | 62,300 |   |  
            | 10/21/2010 | +0.40 / +3.20% | 11.60 | 13.20 | 11.60 | 12.90 | 13.00 | 12.90 | 86,500 |   |  			
            | 10/20/2010 | -0.60 / -4.58% | 12.70 | 12.70 | 12.30 | 12.50 | 12.40 | 12.50 | 113,200 |   |  
            | 10/19/2010 | -0.70 / -5.07% | 12.90 | 13.50 | 12.90 | 13.10 | 13.17 | 13.10 | 127,100 |   |  |