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                    Closing price on 7/20/2011
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        |           
                
                    | Open | 15.80 |  
                    | High | 15.80 |  
                    | Low | 14.60 |  
                    | Volume | 4,900 |  
                    | Split-adjusted Price | 15.30 |  
                
             | 
 |  SD7 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/20/2011 | +0.80 / +5.52% | 15.80 | 15.80 | 14.60 | 15.30 | 15.30 | 15.30 | 4,900 |   |  
            | 7/19/2011 | -0.50 / -3.33% | 15.30 | 15.30 | 14.50 | 14.50 | 14.50 | 14.50 | 8,500 |   |  			
            | 7/18/2011 | +0.20 / +1.35% | 15.40 | 15.40 | 15.00 | 15.00 | 15.00 | 15.00 | 15,000 |   |  
            | 7/15/2011 | 0.00 / 0.00% | 16.10 | 16.10 | 14.80 | 14.80 | 14.80 | 14.80 | 2,300 |   |  			
            | 7/14/2011 | -0.20 / -1.33% | 16.10 | 16.10 | 14.80 | 14.80 | 14.80 | 14.80 | 4,600 |   |  
            | 7/13/2011 | +0.10 / +0.67% | 15.30 | 15.30 | 14.80 | 15.00 | 15.00 | 15.00 | 8,900 |   |  			
            | 7/12/2011 | 0.00 / 0.00% | 14.60 | 14.90 | 14.40 | 14.90 | 14.90 | 14.90 | 32,500 |   |  
            | 7/11/2011 | -0.20 / -1.32% | 14.90 | 14.90 | 14.60 | 14.90 | 14.90 | 14.90 | 23,100 |   |  			
            | 7/8/2011 | +0.40 / +2.72% | 15.80 | 15.80 | 14.80 | 15.10 | 15.10 | 15.10 | 29,700 |   |  
            | 7/7/2011 | -0.10 / -0.68% | 14.90 | 15.40 | 14.70 | 14.70 | 14.70 | 14.70 | 3,700 |   |  			
            | 7/6/2011 | -0.30 / -1.99% | 15.10 | 15.20 | 14.60 | 14.80 | 14.80 | 14.80 | 9,300 |   |  
            | 7/5/2011 | +0.90 / +6.34% | 15.00 | 15.10 | 15.00 | 15.10 | 15.10 | 15.10 | 46,400 |   |  			
            | 7/4/2011 | +0.10 / +0.71% | 14.20 | 14.50 | 14.20 | 14.20 | 14.20 | 14.20 | 12,600 |   |  
            | 7/1/2011 | -0.80 / -5.37% | 14.30 | 14.50 | 14.00 | 14.10 | 14.10 | 14.10 | 28,700 |   |  			
            | 6/30/2011 | -0.40 / -2.61% | 15.10 | 15.10 | 14.70 | 14.90 | 14.90 | 14.90 | 8,500 |   |  
            | 6/29/2011 | 0.00 / 0.00% | 15.10 | 15.40 | 14.90 | 15.30 | 15.30 | 15.30 | 31,800 |   |  			
            | 6/28/2011 | -0.40 / -2.55% | 15.80 | 15.80 | 15.20 | 15.30 | 15.30 | 15.30 | 25,500 |   |  
            | 6/27/2011 | -0.10 / -0.63% | 16.10 | 16.10 | 15.60 | 15.70 | 15.70 | 15.70 | 36,500 |   |  			
            | 6/24/2011 | +0.20 / +1.28% | 15.90 | 16.00 | 15.60 | 15.80 | 15.80 | 15.80 | 39,300 |   |  
            | 6/23/2011 | -0.20 / -1.27% | 16.00 | 16.00 | 15.50 | 15.60 | 15.60 | 15.60 | 42,700 |   |  			
            | 6/22/2011 | 0.00 / 0.00% | 15.50 | 16.30 | 15.30 | 15.80 | 15.80 | 15.80 | 45,600 |   |  
            | 6/21/2011 | +1.10 / +7.48% | 14.90 | 15.80 | 14.80 | 15.80 | 15.80 | 15.80 | 53,300 |   |  			
            | 6/20/2011 | -0.50 / -3.29% | 15.50 | 15.60 | 14.50 | 14.70 | 14.70 | 14.70 | 41,400 |   |  
            | 6/17/2011 | -1.30 / -7.88% | 15.80 | 15.80 | 15.10 | 15.20 | 15.20 | 15.20 | 80,000 |   |  			
            | 6/16/2011 | -0.10 / -0.60% | 16.70 | 16.70 | 15.80 | 16.50 | 16.50 | 16.50 | 51,800 |   |  
            | 6/15/2011 | -0.60 / -3.49% | 16.80 | 16.90 | 16.60 | 16.60 | 16.60 | 16.60 | 161,900 |   |  			
            | 6/14/2011 | -0.60 / -3.37% | 17.60 | 18.60 | 17.00 | 17.20 | 17.20 | 17.20 | 96,800 |   |  
            | 6/13/2011 | +1.10 / +6.59% | 17.80 | 17.80 | 16.90 | 17.80 | 17.80 | 17.80 | 110,000 |   |  			
            | 6/10/2011 | +0.40 / +2.45% | 16.50 | 16.70 | 16.50 | 16.70 | 16.70 | 16.70 | 37,400 |   |  
            | 6/9/2011 | +0.90 / +5.84% | 15.00 | 16.30 | 15.00 | 16.30 | 16.30 | 16.30 | 187,900 |   |  |