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                    Closing price on 9/7/2012
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                    | Open | 3.80 |  
                    | High | 3.80 |  
                    | Low | 3.70 |  
                    | Volume | 1,300 |  
                    | Split-adjusted Price | 3.70 |  
                
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 |  SD1 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/7/2012 | 0.00 / 0.00% | 3.80 | 3.80 | 3.70 | 3.70 | 3.70 | 3.70 | 1,300 |   |  
            | 9/6/2012 | -0.10 / -2.63% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 2,700 |   |  			
            | 9/5/2012 | -0.10 / -2.56% | 3.80 | 3.80 | 3.80 | 3.80 | 3.80 | 3.80 | 12,600 |   |  
            | 9/4/2012 | +0.10 / +2.63% | 3.90 | 3.90 | 3.80 | 3.90 | 3.90 | 3.90 | 2,000 |   |  			
            | 8/31/2012 | -0.10 / -2.56% | 3.80 | 3.80 | 3.80 | 3.80 | 3.80 | 3.80 | 100 |   |  
            | 8/30/2012 | -0.20 / -4.88% | 4.00 | 4.10 | 3.90 | 3.90 | 3.90 | 3.90 | 7,400 |   |  			
            | 8/29/2012 | +0.10 / +2.50% | 3.90 | 4.10 | 3.90 | 4.10 | 4.10 | 4.10 | 3,400 |   |  
            | 8/28/2012 | 0.00 / 0.00% | 3.80 | 4.00 | 3.80 | 4.00 | 4.00 | 4.00 | 14,500 |   |  			
            | 8/27/2012 | -0.20 / -4.76% | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 13,500 |   |  
            | 8/24/2012 | +0.10 / +2.44% | 4.00 | 4.20 | 3.90 | 4.20 | 4.10 | 4.20 | 9,300 |   |  			
            | 8/23/2012 | -0.10 / -2.38% | 4.10 | 4.10 | 4.00 | 4.10 | 4.10 | 4.10 | 38,200 |   |  
            | 8/22/2012 | -0.20 / -4.55% | 4.30 | 4.30 | 4.20 | 4.20 | 4.20 | 4.20 | 5,600 |   |  			
            | 8/21/2012 | -0.20 / -4.35% | 4.50 | 4.50 | 4.40 | 4.40 | 4.40 | 4.40 | 38,700 |   |  
            | 8/20/2012 | 0.00 / 0.00% | 4.80 | 4.80 | 4.60 | 4.60 | 4.60 | 4.60 | 2,300 |   |  			
            | 8/17/2012 | 0.00 / 0.00% | 4.80 | 4.80 | 4.50 | 4.60 | 4.60 | 4.60 | 19,200 |   |  
            | 8/16/2012 | 0.00 / 0.00% | 4.60 | 4.60 | 4.60 | 4.60 | 4.60 | 4.60 | 1,000 |   |  			
            | 8/15/2012 | -0.20 / -4.17% | 4.60 | 4.60 | 4.60 | 4.60 | 4.60 | 4.60 | 100 |   |  
            | 8/14/2012 | +0.20 / +4.35% | 4.60 | 4.80 | 4.60 | 4.80 | 4.80 | 4.80 | 12,800 |   |  			
            | 8/13/2012 | -0.10 / -2.13% | 4.70 | 4.70 | 4.60 | 4.60 | 4.60 | 4.60 | 6,100 |   |  
            | 8/10/2012 | -0.20 / -4.08% | 4.70 | 4.90 | 4.60 | 4.70 | 4.90 | 4.70 | 5,200 |   |  			
            | 8/9/2012 | -0.10 / -2.00% | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 5,700 |   |  
            | 8/8/2012 | +0.10 / +2.04% | 4.80 | 5.00 | 4.80 | 5.00 | 5.00 | 5.00 | 5,000 |   |  			
            | 8/7/2012 | +0.10 / +2.08% | 4.70 | 4.90 | 4.70 | 4.90 | 4.90 | 4.90 | 6,500 |   |  
            | 8/6/2012 | 0.00 / 0.00% | 4.90 | 5.00 | 4.80 | 4.80 | 4.80 | 4.80 | 6,600 |   |  			
            | 8/3/2012 | 0.00 / 0.00% | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 1,000 |   |  
            | 8/2/2012 | +0.20 / +4.35% | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 11,600 |   |  			
            | 8/1/2012 | -0.10 / -2.13% | 4.70 | 4.90 | 4.60 | 4.60 | 4.60 | 4.60 | 32,800 |   |  
            | 7/31/2012 | 0.00 / 0.00% | 4.50 | 4.70 | 4.50 | 4.70 | 4.70 | 4.70 | 200 |   |  			
            | 7/30/2012 | +0.20 / +4.44% | 4.70 | 4.70 | 4.70 | 4.70 | 4.70 | 4.70 | 100 |   |  
            | 7/27/2012 | -0.10 / -2.17% | 4.70 | 4.70 | 4.50 | 4.50 | 4.60 | 4.50 | 20,500 |   |  |