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                    Closing price on 3/4/2013
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                    | Open | 6.00 |  
                    | High | 6.10 |  
                    | Low | 5.80 |  
                    | Volume | 40,066 |  
                    | Split-adjusted Price | 3.24 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/4/2013 | -0.40 / -6.45% | 6.00 | 6.10 | 5.80 | 5.80 | 6.01 | 3.24 | 40,066 |   |  
            | 3/1/2013 | 0.00 / 0.00% | 6.20 | 6.30 | 6.10 | 6.20 | 6.20 | 3.47 | 10,500 |   |  			
            | 2/28/2013 | 0.00 / 0.00% | 6.20 | 6.40 | 6.10 | 6.20 | 6.24 | 3.47 | 19,000 |   |  
            | 2/27/2013 | -0.20 / -3.13% | 6.40 | 6.40 | 6.10 | 6.20 | 6.21 | 3.47 | 12,000 |   |  			
            | 2/26/2013 | -0.40 / -5.88% | 6.50 | 6.50 | 6.10 | 6.40 | 6.20 | 3.58 | 63,700 |   |  
            | 2/25/2013 | 0.00 / 0.00% | 6.90 | 7.00 | 6.50 | 6.80 | 6.64 | 3.80 | 7,700 |   |  			
            | 2/22/2013 | 0.00 / 0.00% | 6.80 | 7.10 | 6.50 | 6.80 | 6.73 | 3.80 | 16,000 |   |  
            | 2/21/2013 | +0.30 / +4.62% | 6.70 | 7.10 | 6.50 | 6.80 | 6.99 | 3.80 | 203,100 |   |  			
            | 2/20/2013 | +0.20 / +3.17% | 6.30 | 6.70 | 6.30 | 6.50 | 6.32 | 3.64 | 90,900 |   |  
            | 2/19/2013 | 0.00 / 0.00% | 6.00 | 6.30 | 6.00 | 6.30 | 6.22 | 3.52 | 7,500 |   |  			
            | 2/18/2013 | +0.10 / +1.61% | 6.20 | 6.40 | 6.20 | 6.30 | 6.29 | 3.52 | 34,000 |   |  
            | 2/8/2013 | +0.20 / +3.33% | 6.10 | 6.20 | 6.00 | 6.20 | 6.19 | 3.47 | 46,800 |   |  			
            | 2/7/2013 | 0.00 / 0.00% | 6.00 | 6.00 | 5.90 | 6.00 | 5.98 | 3.36 | 15,700 |   |  
            | 2/6/2013 | +0.10 / +1.69% | 5.90 | 6.00 | 5.80 | 6.00 | 5.88 | 3.36 | 10,300 |   |  			
            | 2/5/2013 | +0.20 / +3.51% | 6.00 | 6.00 | 5.90 | 5.90 | 6.00 | 3.30 | 2,100 |   |  
            | 2/4/2013 | -0.20 / -3.39% | 6.00 | 6.00 | 5.70 | 5.70 | 5.73 | 3.19 | 4,300 |   |  			
            | 2/1/2013 | +0.10 / +1.72% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 3.30 | 6,000 |   |  
            | 1/31/2013 | -0.20 / -3.33% | 6.00 | 6.00 | 5.80 | 5.80 | 5.88 | 3.24 | 12,000 |   |  			
            | 1/30/2013 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 3.36 | 35,300 |   |  
            | 1/29/2013 | -0.10 / -1.64% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 3.36 | 25,333 |   |  			
            | 1/28/2013 | +0.20 / +3.39% | 5.90 | 6.10 | 5.90 | 6.10 | 6.00 | 3.41 | 72,866 |   |  
            | 1/25/2013 | 0.00 / 0.00% | 5.90 | 6.00 | 5.90 | 5.90 | 5.96 | 3.30 | 14,300 |   |  			
            | 1/24/2013 | +0.10 / +1.72% | 5.80 | 5.90 | 5.80 | 5.90 | 5.80 | 3.30 | 5,000 |   |  
            | 1/23/2013 | -0.10 / -1.69% | 5.80 | 5.80 | 5.60 | 5.80 | 5.67 | 3.24 | 26,400 |   |  			
            | 1/22/2013 | 0.00 / 0.00% | 5.90 | 6.00 | 5.70 | 5.90 | 5.80 | 3.30 | 39,600 |   |  
            | 1/21/2013 | -0.30 / -4.84% | 6.10 | 6.10 | 5.80 | 5.90 | 5.92 | 3.30 | 26,800 |   |  			
            | 1/18/2013 | 0.00 / 0.00% | 6.30 | 6.40 | 6.00 | 6.20 | 6.13 | 3.47 | 33,500 |   |  
            | 1/17/2013 | +0.10 / +1.64% | 6.00 | 6.40 | 5.90 | 6.20 | 6.12 | 3.47 | 109,900 |   |  			
            | 1/16/2013 | +0.30 / +5.17% | 5.80 | 6.20 | 5.80 | 6.10 | 6.02 | 3.41 | 123,933 |   |  
            | 1/15/2013 | +0.10 / +1.75% | 5.70 | 5.90 | 5.60 | 5.80 | 5.73 | 3.24 | 55,600 |   |  |