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                    Closing price on 6/21/2011
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        |           
                
                    | Open | 14.90 |  
                    | High | 15.80 |  
                    | Low | 14.80 |  
                    | Volume | 53,300 |  
                    | Split-adjusted Price | 15.80 |  
                
             | 
 |  SD7 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 6/8/2011 | 0.00 / 0.00% | 16.20 | 16.20 | 15.00 | 15.40 | 15.40 | 15.40 | 83,100 |   |  			
            | 6/7/2011 | +0.70 / +4.76% | 14.90 | 15.40 | 14.90 | 15.40 | 15.40 | 15.40 | 29,200 |   |  
            | 6/6/2011 | -0.20 / -1.34% | 14.20 | 15.00 | 14.20 | 14.70 | 14.70 | 14.70 | 149,300 |   |  			
            | 6/3/2011 | +0.60 / +4.20% | 15.20 | 15.30 | 14.40 | 14.90 | 14.90 | 14.90 | 194,200 |   |  
            | 6/2/2011 | +0.80 / +5.93% | 14.10 | 14.30 | 14.10 | 14.30 | 14.30 | 14.30 | 18,400 |   |  			
            | 6/1/2011 | +0.60 / +4.65% | 12.50 | 13.50 | 12.50 | 13.50 | 13.50 | 13.50 | 56,100 |   |  
            | 5/31/2011 | -0.10 / -0.77% | 12.60 | 13.30 | 12.60 | 12.90 | 12.90 | 12.90 | 16,900 |   |  			
            | 5/30/2011 | -0.20 / -1.52% | 13.60 | 13.80 | 12.80 | 13.00 | 13.00 | 13.00 | 54,900 |   |  
            | 5/27/2011 | 0.00 / 0.00% | 13.20 | 13.20 | 13.20 | 13.20 | 13.20 | 13.20 | 36,100 |   |  			
            | 5/26/2011 | +0.40 / +3.13% | 12.80 | 13.50 | 12.00 | 13.20 | 13.20 | 13.20 | 85,900 |   |  
            | 5/25/2011 | -0.80 / -5.88% | 12.90 | 13.00 | 12.80 | 12.80 | 12.80 | 12.80 | 71,500 |   |  			
            | 5/24/2011 | -1.00 / -6.85% | 13.90 | 14.10 | 13.60 | 13.60 | 13.60 | 13.60 | 92,500 |   |  
            | 5/23/2011 | -0.80 / -5.19% | 14.50 | 15.00 | 14.50 | 14.60 | 14.60 | 14.60 | 109,600 |   |  			
            | 5/20/2011 | -0.60 / -3.75% | 15.90 | 15.90 | 15.30 | 15.40 | 15.40 | 15.40 | 29,000 |   |  
            | 5/19/2011 | -0.50 / -3.03% | 16.40 | 16.90 | 16.00 | 16.00 | 16.00 | 16.00 | 32,500 |   |  			
            | 5/18/2011 | -0.60 / -3.51% | 16.70 | 16.80 | 16.20 | 16.50 | 16.50 | 16.50 | 53,200 |   |  
            | 5/17/2011 | -0.50 / -2.84% | 17.90 | 17.90 | 16.90 | 17.10 | 17.10 | 17.10 | 39,400 |   |  			
            | 5/16/2011 | -1.20 / -6.38% | 19.00 | 19.00 | 17.60 | 17.60 | 17.60 | 17.60 | 103,800 |   |  
            | 5/13/2011 | -0.40 / -2.08% | 19.00 | 19.00 | 18.80 | 18.80 | 18.80 | 18.80 | 10,700 |   |  			
            | 5/12/2011 | 0.00 / 0.00% | 19.00 | 19.20 | 18.80 | 19.20 | 19.20 | 19.20 | 5,500 |   |  
            | 5/11/2011 | -0.60 / -3.03% | 19.20 | 19.40 | 19.20 | 19.20 | 19.20 | 19.20 | 7,400 |   |  |