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                    Closing price on 9/21/2012
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        |           
                
                    | Open | 6.30 |  
                    | High | 6.40 |  
                    | Low | 5.90 |  
                    | Volume | 1,400 |  
                    | Split-adjusted Price | 2.79 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/21/2012 | +0.30 / +5.00% | 6.30 | 6.40 | 5.90 | 6.30 | 6.08 | 2.79 | 1,400 |   |  
            | 9/20/2012 | -0.40 / -6.25% | 6.60 | 6.60 | 6.00 | 6.00 | 6.11 | 2.66 | 42,400 |   |  			
            | 9/19/2012 | +0.10 / +1.59% | 6.40 | 6.40 | 6.30 | 6.40 | 6.38 | 2.83 | 2,833 |   |  
            | 9/18/2012 | -0.10 / -1.56% | 6.50 | 6.50 | 6.10 | 6.30 | 6.20 | 2.79 | 14,600 |   |  			
            | 9/17/2012 | -0.40 / -5.88% | 6.90 | 6.90 | 6.30 | 6.40 | 6.39 | 2.83 | 17,900 |   |  
            | 9/14/2012 | +0.10 / +1.49% | 6.60 | 6.80 | 6.60 | 6.80 | 6.72 | 3.01 | 16,500 |   |  			
            | 9/13/2012 | +0.20 / +3.08% | 6.70 | 6.70 | 6.40 | 6.70 | 6.49 | 2.97 | 4,500 |   |  
            | 9/12/2012 | -0.20 / -2.99% | 6.70 | 6.70 | 6.30 | 6.50 | 6.45 | 2.88 | 2,600 |   |  			
            | 9/11/2012 | 0.00 / 0.00% | 6.90 | 6.90 | 6.30 | 6.70 | 6.34 | 2.97 | 13,800 |   |  
            | 9/10/2012 | 0.00 / 0.00% | 7.00 | 7.00 | 6.30 | 6.70 | 6.69 | 2.97 | 1,300 |   |  			
            | 9/7/2012 | -0.10 / -1.47% | 6.90 | 6.90 | 6.70 | 6.70 | 6.80 | 2.97 | 200 |   |  
            | 9/6/2012 | 0.00 / 0.00% | 6.90 | 6.90 | 6.50 | 6.80 | 6.62 | 3.01 | 4,400 |   |  			
            | 9/5/2012 | -0.20 / -2.86% | 6.90 | 6.90 | 6.80 | 6.80 | 6.84 | 3.01 | 7,700 |   |  
            | 9/4/2012 | 0.00 / 0.00% | 7.00 | 7.00 | 6.80 | 7.00 | 6.88 | 3.10 | 500 |   |  			
            | 8/31/2012 | -0.10 / -1.41% | 7.30 | 7.30 | 6.80 | 7.00 | 7.02 | 3.10 | 500 |   |  
            | 8/30/2012 | -0.10 / -1.39% | 7.40 | 7.40 | 6.80 | 7.10 | 6.88 | 3.14 | 2,700 |   |  			
            | 8/29/2012 | +0.20 / +2.86% | 7.10 | 7.20 | 7.00 | 7.20 | 7.09 | 3.19 | 5,300 |   |  
            | 8/28/2012 | +0.10 / +1.45% | 7.20 | 7.20 | 7.00 | 7.00 | 7.01 | 3.10 | 1,500 |   |  			
            | 8/27/2012 | -0.20 / -2.82% | 7.40 | 7.40 | 6.70 | 6.90 | 6.75 | 3.05 | 18,900 |   |  
            | 8/24/2012 | +0.10 / +1.43% | 6.70 | 7.10 | 6.70 | 7.10 | 6.95 | 3.14 | 19,700 |   |  			
            | 8/23/2012 | -0.30 / -4.11% | 7.20 | 7.30 | 6.80 | 7.00 | 6.87 | 3.10 | 100,000 |   |  
            | 8/22/2012 | -0.20 / -2.67% | 7.20 | 7.50 | 7.00 | 7.30 | 7.25 | 3.23 | 20,100 |   |  			
            | 8/21/2012 | -0.50 / -6.25% | 7.70 | 7.70 | 7.50 | 7.50 | 7.54 | 3.32 | 22,500 |   |  
            | 8/20/2012 | +0.10 / +1.27% | 7.90 | 8.30 | 7.90 | 8.00 | 7.99 | 3.54 | 11,200 |   |  			
            | 8/17/2012 | 0.00 / 0.00% | 7.80 | 8.00 | 7.80 | 7.90 | 7.82 | 3.50 | 9,500 |   |  
            | 8/16/2012 | 0.00 / 0.00% | 7.90 | 7.90 | 7.90 | 7.90 | 7.90 | 3.50 | 5,200 |   |  			
            | 8/15/2012 | 0.00 / 0.00% | 7.90 | 8.20 | 7.90 | 7.90 | 7.95 | 3.50 | 4,600 |   |  
            | 8/14/2012 | -0.30 / -3.66% | 8.00 | 8.10 | 7.90 | 7.90 | 8.04 | 3.50 | 13,300 |   |  			
            | 8/13/2012 | 0.00 / 0.00% | 8.00 | 8.20 | 8.00 | 8.20 | 8.13 | 3.63 | 2,266 |   |  
            | 8/10/2012 | +0.10 / +1.23% | 8.00 | 8.30 | 8.00 | 8.20 | 8.03 | 3.63 | 24,200 |   |  |