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                    Closing price on 12/22/2011
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                    | Open | 6.30 |  
                    | High | 6.30 |  
                    | Low | 5.90 |  
                    | Volume | 58,300 |  
                    | Split-adjusted Price | 2.61 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 12/19/2011 | -0.30 / -4.48% | 6.50 | 6.90 | 6.40 | 6.40 | 6.58 | 2.83 | 11,500 |   |  			
            | 12/16/2011 | +0.40 / +6.35% | 6.20 | 6.70 | 6.20 | 6.70 | 6.66 | 2.97 | 23,400 |   |  
            | 12/15/2011 | -0.10 / -1.56% | 6.50 | 6.50 | 6.20 | 6.30 | 6.31 | 2.79 | 7,200 |   |  			
            | 12/14/2011 | -0.40 / -5.88% | 6.70 | 6.80 | 6.40 | 6.40 | 6.55 | 2.83 | 22,600 |   |  
            | 12/13/2011 | -0.20 / -2.86% | 6.90 | 6.90 | 6.70 | 6.80 | 6.78 | 3.01 | 9,200 |   |  			
            | 12/12/2011 | -0.30 / -4.11% | 7.00 | 7.00 | 6.90 | 7.00 | 6.96 | 3.10 | 19,500 |   |  
            | 12/9/2011 | -0.20 / -2.67% | 7.50 | 7.50 | 7.30 | 7.30 | 7.39 | 3.23 | 21,900 |   |  			
            | 12/8/2011 | 0.00 / 0.00% | 7.50 | 7.80 | 7.50 | 7.50 | 7.67 | 3.32 | 64,200 |   |  
            | 12/7/2011 | +0.10 / +1.35% | 7.60 | 7.60 | 7.50 | 7.50 | 7.54 | 3.32 | 13,300 |   |  			
            | 12/6/2011 | 0.00 / 0.00% | 7.70 | 7.70 | 7.40 | 7.40 | 7.65 | 3.28 | 12,000 |   |  
            | 12/5/2011 | +0.30 / +4.23% | 7.40 | 7.40 | 7.40 | 7.40 | 7.40 | 3.28 | 48,100 |   |  			
            | 12/2/2011 | +0.10 / +1.43% | 7.00 | 7.10 | 7.00 | 7.10 | 7.05 | 3.14 | 19,000 |   |  
            | 12/1/2011 | +0.20 / +2.94% | 6.80 | 7.00 | 6.80 | 7.00 | 6.98 | 3.10 | 4,400 |   |  			
            | 11/30/2011 | -0.10 / -1.45% | 7.00 | 7.00 | 6.70 | 6.80 | 6.78 | 3.01 | 36,200 |   |  
            | 11/29/2011 | -0.20 / -2.82% | 7.40 | 7.40 | 6.90 | 6.90 | 7.04 | 3.05 | 42,800 |   |  			
            | 11/28/2011 | +0.20 / +2.90% | 6.90 | 7.30 | 6.90 | 7.10 | 7.09 | 3.14 | 25,500 |   |  
            | 11/25/2011 | 0.00 / 0.00% | 7.40 | 7.40 | 6.80 | 6.90 | 6.86 | 3.05 | 13,900 |   |  			
            | 11/24/2011 | -0.10 / -1.43% | 7.10 | 7.10 | 6.90 | 6.90 | 6.97 | 3.05 | 23,000 |   |  
            | 11/23/2011 | +0.10 / +1.45% | 7.20 | 7.20 | 6.90 | 7.00 | 6.94 | 3.10 | 7,000 |   |  			
            | 11/22/2011 | -0.10 / -1.43% | 6.60 | 7.00 | 6.60 | 6.90 | 6.86 | 3.05 | 5,500 |   |  
            | 11/21/2011 | +0.20 / +2.94% | 6.90 | 7.00 | 6.70 | 7.00 | 6.83 | 3.10 | 16,900 |   |  			
            | 11/18/2011 | -0.30 / -4.23% | 7.10 | 7.20 | 6.80 | 6.80 | 6.98 | 3.01 | 49,100 |   |  
            | 11/17/2011 | -0.20 / -2.74% | 7.30 | 7.30 | 7.10 | 7.10 | 7.16 | 3.14 | 32,900 |   |  			
            | 11/16/2011 | +0.20 / +2.82% | 7.20 | 7.30 | 7.10 | 7.30 | 7.23 | 3.23 | 61,500 |   |  
            | 11/15/2011 | +0.30 / +4.41% | 7.20 | 7.20 | 7.00 | 7.10 | 7.11 | 3.14 | 59,700 |   |  			
            | 11/14/2011 | -0.40 / -5.56% | 7.20 | 7.30 | 6.80 | 6.80 | 7.14 | 3.01 | 25,700 |   |  
            | 11/11/2011 | 0.00 / 0.00% | 7.20 | 7.70 | 7.20 | 7.20 | 7.31 | 3.19 | 13,900 |   |  |