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                    Closing price on 2/7/2012
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                    | Open | 7.20 |  
                    | High | 7.20 |  
                    | Low | 6.80 |  
                    | Volume | 7,100 |  
                    | Split-adjusted Price | 3.10 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/7/2012 | +0.20 / +2.94% | 7.20 | 7.20 | 6.80 | 7.00 | 6.89 | 3.10 | 7,100 |   |  
            | 2/6/2012 | -0.40 / -5.56% | 6.70 | 6.90 | 6.70 | 6.80 | 6.83 | 3.01 | 26,300 |   |  			
            | 2/3/2012 | -0.50 / -6.49% | 8.00 | 8.00 | 7.20 | 7.20 | 7.23 | 3.19 | 88,700 |   |  
            | 2/2/2012 | +0.50 / +6.94% | 7.60 | 7.70 | 7.50 | 7.70 | 7.68 | 3.41 | 25,600 |   |  			
            | 2/1/2012 | +0.20 / +2.86% | 7.40 | 7.40 | 7.00 | 7.20 | 7.21 | 3.19 | 11,700 |   |  
            | 1/31/2012 | +0.20 / +2.94% | 7.20 | 7.20 | 7.00 | 7.00 | 7.17 | 3.10 | 53,100 |   |  			
            | 1/30/2012 | +0.60 / +9.68% | 6.30 | 6.80 | 6.30 | 6.80 | 6.77 | 3.01 | 15,300 |   |  
            | 1/20/2012 | -0.40 / -6.06% | 6.80 | 6.80 | 6.20 | 6.20 | 6.43 | 2.74 | 19,000 |   |  			
            | 1/19/2012 | +0.30 / +4.76% | 6.30 | 6.60 | 6.30 | 6.60 | 6.57 | 2.92 | 33,300 |   |  
            | 1/18/2012 | +0.40 / +6.78% | 6.10 | 6.30 | 5.90 | 6.30 | 6.22 | 2.79 | 19,400 |   |  			
            | 1/17/2012 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 2.61 | 13,000 |   |  
            | 1/16/2012 | -0.30 / -4.84% | 5.90 | 6.20 | 5.80 | 5.90 | 5.93 | 2.61 | 16,300 |   |  			
            | 1/13/2012 | +0.40 / +6.90% | 5.90 | 6.20 | 5.90 | 6.20 | 6.16 | 2.74 | 3,200 |   |  
            | 1/12/2012 | 0.00 / 0.00% | 5.80 | 5.80 | 5.70 | 5.80 | 5.80 | 2.57 | 15,500 |   |  			
            | 1/11/2012 | -0.10 / -1.69% | 5.70 | 5.80 | 5.70 | 5.80 | 5.77 | 2.57 | 4,100 |   |  
            | 1/10/2012 | +0.40 / +7.27% | 5.70 | 5.90 | 5.70 | 5.90 | 5.85 | 2.61 | 10,700 |   |  			
            | 1/9/2012 | 0.00 / 0.00% | 5.40 | 5.80 | 5.40 | 5.50 | 5.63 | 2.44 | 22,800 |   |  
            | 1/6/2012 | +0.20 / +3.77% | 5.40 | 5.50 | 5.40 | 5.50 | 5.48 | 2.44 | 16,300 |   |  			
            | 1/5/2012 | -0.20 / -3.64% | 5.40 | 5.40 | 5.30 | 5.30 | 5.35 | 2.35 | 6,000 |   |  
            | 1/4/2012 | -0.20 / -3.51% | 5.50 | 5.70 | 5.50 | 5.50 | 5.60 | 2.44 | 13,400 |   |  			
            | 1/3/2012 | +0.10 / +1.79% | 5.60 | 5.70 | 5.40 | 5.70 | 5.59 | 2.52 | 23,200 |   |  
            | 12/30/2011 | +0.20 / +3.70% | 5.60 | 5.60 | 5.60 | 5.60 | 5.60 | 2.48 | 65,500 |   |  			
            | 12/29/2011 | -0.20 / -3.57% | 5.10 | 5.40 | 5.10 | 5.40 | 5.34 | 2.39 | 2,500 |   |  
            | 12/28/2011 | +0.30 / +5.66% | 5.30 | 5.60 | 5.30 | 5.60 | 5.32 | 2.48 | 29,600 |   |  			
            | 12/27/2011 | -0.20 / -3.64% | 5.20 | 5.40 | 5.20 | 5.30 | 5.30 | 2.35 | 9,100 |   |  
            | 12/26/2011 | -0.50 / -8.33% | 5.50 | 5.80 | 5.40 | 5.50 | 5.46 | 2.44 | 52,700 |   |  			
            | 12/23/2011 | +0.10 / +1.69% | 5.80 | 6.00 | 5.50 | 6.00 | 5.66 | 2.66 | 78,400 |   |  
            | 12/22/2011 | -0.50 / -7.81% | 6.30 | 6.30 | 5.90 | 5.90 | 5.94 | 2.61 | 58,300 |   |  			
            | 12/21/2011 | 0.00 / 0.00% | 6.50 | 6.50 | 6.30 | 6.40 | 6.32 | 2.83 | 10,100 |   |  
            | 12/20/2011 | 0.00 / 0.00% | 6.30 | 6.40 | 6.30 | 6.40 | 6.35 | 2.83 | 7,500 |   |  |