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                    Closing price on 9/22/2010
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        |           
                
                    | Open | 29.30 |  
                    | High | 31.40 |  
                    | Low | 29.10 |  
                    | Volume | 51,200 |  
                    | Split-adjusted Price | 16.82 |  
                
             | 
 |  SD3 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/22/2010 | -0.20 / -0.66% | 29.30 | 31.40 | 29.10 | 30.00 | 30.60 | 16.82 | 51,200 |   |  
            | 9/21/2010 | -1.30 / -4.13% | 32.50 | 32.50 | 30.00 | 30.20 | 30.60 | 16.93 | 61,200 |   |  			
            | 9/20/2010 | +1.80 / +6.06% | 31.50 | 31.70 | 30.70 | 31.50 | 31.70 | 17.66 | 153,800 |   |  
            | 9/17/2010 | +1.90 / +6.79% | 29.00 | 29.90 | 29.00 | 29.90 | 29.45 | 16.77 | 95,900 |   |  			
            | 9/16/2010 | +0.10 / +0.36% | 28.90 | 28.90 | 27.80 | 28.00 | 28.00 | 15.70 | 9,300 |   |  
            | 9/15/2010 | -1.10 / -3.79% | 29.00 | 29.00 | 27.00 | 27.90 | 27.90 | 15.64 | 50,500 |   |  			
            | 9/14/2010 | +0.20 / +0.69% | 30.40 | 30.40 | 28.00 | 29.00 | 29.00 | 16.26 | 36,600 |   |  
            | 9/13/2010 | -2.10 / -6.80% | 29.50 | 30.50 | 28.80 | 28.80 | 29.00 | 16.15 | 67,400 |   |  			
            | 9/10/2010 | -1.80 / -5.70% | 32.90 | 32.90 | 29.30 | 29.80 | 31.40 | 16.71 | 124,600 |   |  
            | 9/9/2010 | +1.90 / +6.40% | 30.50 | 31.60 | 30.00 | 31.60 | 31.40 | 17.72 | 100,100 |   |  			
            | 9/8/2010 | -1.60 / -5.11% | 30.60 | 30.60 | 29.30 | 29.70 | 29.60 | 16.65 | 96,400 |   |  
            | 9/7/2010 | 0.00 / 0.00% | 33.10 | 33.10 | 29.80 | 31.30 | 31.50 | 17.55 | 120,300 |   |  			
            | 9/6/2010 | +2.00 / +6.83% | 30.00 | 31.30 | 30.00 | 31.30 | 31.20 | 17.55 | 38,900 |   |  
            | 9/1/2010 | +1.50 / +5.24% | 28.20 | 30.10 | 28.20 | 30.10 | 28.20 | 16.88 | 93,500 |   |  			
            | 8/31/2010 | +1.80 / +6.72% | 28.20 | 28.60 | 26.80 | 28.60 | 28.20 | 16.04 | 156,900 |   |  
            | 8/30/2010 | +1.70 / +6.77% | 26.40 | 26.80 | 26.40 | 26.80 | 26.80 | 15.03 | 34,300 |   |  			
            | 8/27/2010 | -1.00 / -3.85% | 26.70 | 26.70 | 24.50 | 25.00 | 26.30 | 14.02 | 48,200 |   |  
            | 8/26/2010 | -1.30 / -4.76% | 27.30 | 28.00 | 25.40 | 26.00 | 26.30 | 14.58 | 89,100 |   |  			
            | 8/25/2010 | -2.00 / -6.83% | 27.40 | 27.40 | 27.30 | 27.30 | 27.30 | 15.31 | 23,100 |   |  
            | 8/24/2010 | -1.60 / -5.18% | 30.10 | 30.10 | 29.30 | 29.30 | 29.30 | 16.43 | 44,200 |   |  			
            | 8/23/2010 | -1.30 / -4.04% | 32.10 | 32.10 | 30.90 | 30.90 | 31.50 | 17.33 | 31,700 |   |  
            | 8/20/2010 | -1.00 / -3.05% | 32.00 | 33.50 | 31.50 | 31.80 | 32.70 | 17.83 | 55,400 |   |  			
            | 8/19/2010 | -0.10 / -0.30% | 33.00 | 33.20 | 32.20 | 32.80 | 32.70 | 18.39 | 23,100 |   |  
            | 8/18/2010 | -0.70 / -2.08% | 34.20 | 34.20 | 32.50 | 32.90 | 33.50 | 18.45 | 12,900 |   |  			
            | 8/17/2010 | -1.20 / -3.45% | 34.80 | 34.80 | 33.20 | 33.60 | 34.20 | 18.84 | 32,900 |   |  
            | 8/16/2010 | +2.20 / +6.75% | 33.50 | 34.80 | 33.50 | 34.80 | 34.60 | 19.51 | 58,600 |   |  			
            | 8/13/2010 | +1.50 / +4.70% | 30.20 | 34.00 | 30.20 | 33.40 | 32.40 | 18.73 | 49,200 |   |  
            | 8/12/2010 | -2.90 / -8.33% | 33.40 | 34.10 | 31.90 | 31.90 | 32.40 | 17.89 | 115,100 |   |  			
            | 8/11/2010 | +1.00 / +2.96% | 34.50 | 35.00 | 33.00 | 34.80 | 34.20 | 19.51 | 84,500 |   |  
            | 8/10/2010 | -1.80 / -5.06% | 35.70 | 35.70 | 33.30 | 33.80 | 33.90 | 18.95 | 81,500 |   |  |