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            | 
                    Closing price on 3/21/2013
                 |  |  
    
        |           
                
                    | Open | 5.80 |  
                    | High | 6.00 |  
                    | Low | 5.40 |  
                    | Volume | 7,600 |  
                    | Split-adjusted Price | 6.00 |  
                
             | 
 |  SD7 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/21/2013 | 0.00 / 0.00% | 5.80 | 6.00 | 5.40 | 6.00 | 6.00 | 6.00 | 7,600 |   |  
            | 3/20/2013 | +0.10 / +1.69% | 6.00 | 6.20 | 5.50 | 6.00 | 6.00 | 6.00 | 7,600 |   |  			
            | 3/19/2013 | 0.00 / 0.00% | 5.90 | 6.10 | 5.90 | 5.90 | 5.90 | 5.90 | 8,500 |   |  
            | 3/18/2013 | -0.10 / -1.67% | 5.90 | 5.90 | 5.80 | 5.90 | 5.90 | 5.90 | 7,300 |   |  			
            | 3/15/2013 | +0.10 / +1.69% | 6.10 | 6.10 | 5.90 | 6.00 | 6.00 | 6.00 | 3,800 |   |  
            | 3/14/2013 | 0.00 / 0.00% | 5.80 | 5.90 | 5.80 | 5.90 | 5.90 | 5.90 | 1,100 |   |  			
            | 3/13/2013 | -0.10 / -1.67% | 5.70 | 5.90 | 5.50 | 5.90 | 5.90 | 5.90 | 8,900 |   |  
            | 3/12/2013 | +0.10 / +1.69% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 1,300 |   |  			
            | 3/11/2013 | +0.30 / +5.36% | 5.60 | 6.00 | 5.60 | 5.90 | 5.90 | 5.90 | 30,100 |   |  
            | 3/8/2013 | +0.10 / +1.82% | 5.50 | 5.70 | 5.50 | 5.60 | 5.60 | 5.60 | 14,300 |   |  			
            | 3/7/2013 | -0.20 / -3.51% | 5.70 | 5.70 | 5.50 | 5.50 | 5.50 | 5.50 | 5,600 |   |  
            | 3/6/2013 | +0.30 / +5.56% | 5.80 | 5.80 | 5.60 | 5.70 | 5.70 | 5.70 | 7,900 |   |  			
            | 3/5/2013 | -0.40 / -6.90% | 5.50 | 5.80 | 5.40 | 5.40 | 5.40 | 5.40 | 13,800 |   |  
            | 3/4/2013 | -0.30 / -4.92% | 6.00 | 6.00 | 5.60 | 5.80 | 5.80 | 5.80 | 30,800 |   |  			
            | 3/1/2013 | -0.20 / -3.17% | 6.50 | 6.50 | 6.10 | 6.10 | 6.10 | 6.10 | 2,800 |   |  
            | 2/28/2013 | +0.20 / +3.28% | 6.70 | 6.70 | 6.10 | 6.30 | 6.30 | 6.30 | 9,100 |   |  			
            | 2/27/2013 | +0.10 / +1.67% | 6.10 | 6.10 | 6.00 | 6.10 | 6.10 | 6.10 | 5,000 |   |  
            | 2/26/2013 | -0.70 / -10.45% | 6.60 | 6.60 | 6.00 | 6.00 | 6.00 | 6.00 | 49,800 |   |  			
            | 2/25/2013 | +0.30 / +4.69% | 6.50 | 6.70 | 6.30 | 6.70 | 6.70 | 6.70 | 9,700 |   |  
            | 2/22/2013 | +0.20 / +3.23% | 6.50 | 6.50 | 6.10 | 6.40 | 6.40 | 6.40 | 13,500 |   |  			
            | 2/21/2013 | -0.60 / -8.82% | 6.70 | 7.00 | 6.20 | 6.20 | 6.20 | 6.20 | 82,600 |   |  
            | 2/20/2013 | +0.10 / +1.49% | 6.80 | 6.90 | 6.60 | 6.80 | 6.80 | 6.80 | 24,100 |   |  			
            | 2/19/2013 | -0.20 / -2.90% | 6.90 | 7.00 | 6.70 | 6.70 | 6.70 | 6.70 | 61,700 |   |  
            | 2/18/2013 | +0.50 / +7.81% | 6.60 | 7.00 | 6.60 | 6.90 | 6.90 | 6.90 | 57,900 |   |  			
            | 2/8/2013 | +0.20 / +3.23% | 6.40 | 6.50 | 6.40 | 6.40 | 6.40 | 6.40 | 27,300 |   |  
            | 2/7/2013 | +0.20 / +3.33% | 6.00 | 6.20 | 6.00 | 6.20 | 6.20 | 6.20 | 5,600 |   |  			
            | 2/6/2013 | 0.00 / 0.00% | 6.10 | 6.10 | 6.00 | 6.00 | 6.00 | 6.00 | 18,300 |   |  
            | 2/5/2013 | 0.00 / 0.00% | 6.00 | 6.00 | 5.80 | 6.00 | 6.00 | 6.00 | 8,100 |   |  			
            | 2/4/2013 | 0.00 / 0.00% | 6.20 | 6.20 | 6.00 | 6.00 | 6.00 | 6.00 | 4,300 |   |  
            | 2/1/2013 | -0.20 / -3.23% | 6.20 | 6.20 | 5.90 | 6.00 | 6.00 | 6.00 | 19,800 |   |  |