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                    Closing price on 5/4/2012
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        |           
                
                    | Open | 10.50 |  
                    | High | 11.00 |  
                    | Low | 10.50 |  
                    | Volume | 92,700 |  
                    | Split-adjusted Price | 4.74 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/4/2012 | +0.20 / +1.90% | 10.50 | 11.00 | 10.50 | 10.70 | 10.68 | 4.74 | 92,700 |   |  
            | 5/3/2012 | +0.10 / +0.96% | 10.50 | 10.60 | 10.20 | 10.50 | 10.40 | 4.65 | 78,400 |   |  			
            | 5/2/2012 | +0.40 / +4.00% | 10.30 | 10.60 | 10.30 | 10.40 | 10.45 | 4.60 | 125,600 |   |  
            | 4/27/2012 | -0.10 / -0.99% | 9.80 | 10.10 | 9.80 | 10.00 | 9.99 | 4.43 | 54,200 |   |  			
            | 4/26/2012 | 0.00 / 0.00% | 9.90 | 10.10 | 9.60 | 10.10 | 9.77 | 4.47 | 51,200 |   |  
            | 4/25/2012 | 0.00 / 0.00% | 10.00 | 10.30 | 10.00 | 10.10 | 10.19 | 4.47 | 25,566 |   |  			
            | 4/24/2012 | +0.20 / +2.02% | 10.10 | 10.10 | 9.50 | 10.10 | 9.95 | 4.47 | 39,300 |   |  
            | 4/23/2012 | +0.10 / +1.02% | 10.10 | 10.20 | 9.80 | 9.90 | 9.90 | 4.38 | 23,500 |   |  			
            | 4/20/2012 | +0.10 / +1.03% | 9.80 | 9.90 | 9.70 | 9.80 | 9.81 | 4.34 | 73,633 |   |  
            | 4/19/2012 | -0.60 / -5.83% | 10.00 | 10.30 | 9.70 | 9.70 | 10.00 | 4.29 | 135,933 |   |  			
            | 4/18/2012 | 0.00 / 0.00% | 10.20 | 10.50 | 9.90 | 10.30 | 10.27 | 4.56 | 147,302 |   |  
            | 4/17/2012 | 0.00 / 0.00% | 10.30 | 10.70 | 10.30 | 10.30 | 10.44 | 4.56 | 92,200 |   |  			
            | 4/16/2012 | +0.50 / +5.10% | 9.20 | 10.30 | 9.20 | 10.30 | 10.11 | 4.56 | 68,800 |   |  
            | 4/13/2012 | -0.50 / -4.85% | 10.20 | 10.20 | 9.80 | 9.80 | 9.99 | 4.34 | 92,100 |   |  			
            | 4/12/2012 | +0.40 / +4.04% | 10.20 | 10.40 | 10.00 | 10.30 | 10.18 | 4.56 | 195,400 |   |  
            | 4/11/2012 | +0.50 / +5.32% | 9.20 | 9.90 | 9.20 | 9.90 | 9.67 | 4.38 | 105,200 |   |  			
            | 4/10/2012 | -0.10 / -1.05% | 9.50 | 9.80 | 9.10 | 9.40 | 9.31 | 4.16 | 63,400 |   |  
            | 4/9/2012 | +0.40 / +4.40% | 9.40 | 9.50 | 9.10 | 9.50 | 9.33 | 4.21 | 95,666 |   |  			
            | 4/6/2012 | 0.00 / 0.00% | 9.20 | 9.30 | 9.00 | 9.10 | 9.12 | 4.03 | 85,866 |   |  
            | 4/5/2012 | +0.30 / +3.41% | 8.60 | 9.20 | 8.60 | 9.10 | 8.94 | 4.03 | 68,900 |   |  			
            | 4/4/2012 | -0.20 / -2.22% | 9.00 | 9.00 | 8.50 | 8.80 | 8.71 | 3.90 | 77,166 |   |  
            | 4/3/2012 | +0.50 / +5.88% | 8.50 | 9.00 | 8.50 | 9.00 | 8.71 | 3.98 | 101,800 |   |  			
            | 3/30/2012 | -0.50 / -5.56% | 8.90 | 8.90 | 8.50 | 8.50 | 8.57 | 3.76 | 67,900 |   |  
            | 3/29/2012 | -0.30 / -3.23% | 9.40 | 9.40 | 8.90 | 9.00 | 9.17 | 3.98 | 106,200 |   |  			
            | 3/28/2012 | -0.10 / -1.06% | 8.80 | 9.40 | 8.80 | 9.30 | 9.19 | 4.12 | 76,500 |   |  
            | 3/27/2012 | -0.20 / -2.08% | 10.10 | 10.20 | 9.20 | 9.40 | 9.82 | 4.16 | 135,666 |   |  			
            | 3/26/2012 | +0.50 / +5.49% | 9.30 | 9.60 | 9.30 | 9.60 | 9.54 | 4.25 | 341,799 |   |  
            | 3/23/2012 | +0.50 / +5.81% | 8.70 | 9.20 | 8.70 | 9.10 | 9.04 | 4.03 | 228,200 |   |  			
            | 3/22/2012 | 0.00 / 0.00% | 8.50 | 8.70 | 8.50 | 8.60 | 8.57 | 3.81 | 50,200 |   |  
            | 3/21/2012 | +0.20 / +2.38% | 8.20 | 8.80 | 8.20 | 8.60 | 8.58 | 3.81 | 98,300 |   |  |