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                    Closing price on 2/24/2012
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                    | Open | 8.30 |  
                    | High | 8.50 |  
                    | Low | 8.10 |  
                    | Volume | 184,900 |  
                    | Split-adjusted Price | 3.59 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/24/2012 | 0.00 / 0.00% | 8.30 | 8.50 | 8.10 | 8.10 | 8.31 | 3.59 | 184,900 |   |  
            | 2/23/2012 | +0.40 / +5.19% | 7.90 | 8.10 | 7.50 | 8.10 | 8.00 | 3.59 | 123,700 |   |  			
            | 2/22/2012 | +0.60 / +8.45% | 7.40 | 7.70 | 7.40 | 7.70 | 7.64 | 3.41 | 17,100 |   |  
            | 2/21/2012 | -0.20 / -2.74% | 7.70 | 7.70 | 7.10 | 7.10 | 7.26 | 3.14 | 37,300 |   |  			
            | 2/20/2012 | +0.40 / +5.80% | 7.20 | 7.30 | 7.20 | 7.30 | 7.30 | 3.23 | 99,800 |   |  
            | 2/17/2012 | +0.20 / +2.99% | 6.90 | 6.90 | 6.70 | 6.90 | 6.87 | 3.05 | 72,500 |   |  			
            | 2/16/2012 | +0.20 / +3.08% | 6.50 | 6.70 | 6.50 | 6.70 | 6.64 | 2.97 | 12,800 |   |  
            | 2/15/2012 | -0.20 / -2.99% | 6.70 | 6.80 | 6.40 | 6.50 | 6.63 | 2.88 | 32,200 |   |  			
            | 2/14/2012 | +0.30 / +4.69% | 6.40 | 6.80 | 6.40 | 6.70 | 6.73 | 2.97 | 17,600 |   |  
            | 2/13/2012 | -0.20 / -3.03% | 6.40 | 6.60 | 6.40 | 6.40 | 6.47 | 2.83 | 24,300 |   |  			
            | 2/10/2012 | -0.30 / -4.35% | 7.00 | 7.20 | 6.60 | 6.60 | 6.68 | 2.92 | 67,200 |   |  
            | 2/9/2012 | -0.10 / -1.43% | 7.40 | 7.40 | 6.90 | 6.90 | 6.97 | 3.05 | 20,300 |   |  			
            | 2/8/2012 | 0.00 / 0.00% | 7.30 | 7.30 | 6.90 | 7.00 | 7.09 | 3.10 | 57,600 |   |  
            | 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 |   |  |