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            | 
                    Closing price on 3/23/2012
                 |  |  
    
        |           
                
                    | Open | 8.70 |  
                    | High | 9.20 |  
                    | Low | 8.70 |  
                    | Volume | 228,200 |  
                    | Split-adjusted Price | 4.03 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 3/20/2012 | +0.10 / +1.20% | 8.20 | 8.50 | 8.20 | 8.40 | 8.31 | 3.72 | 77,800 |   |  			
            | 3/19/2012 | -0.20 / -2.35% | 8.30 | 8.50 | 8.10 | 8.30 | 8.36 | 3.67 | 27,300 |   |  
            | 3/16/2012 | +0.10 / +1.19% | 8.60 | 8.60 | 8.40 | 8.50 | 8.51 | 3.76 | 48,200 |   |  			
            | 3/15/2012 | +0.50 / +6.33% | 7.80 | 8.40 | 7.80 | 8.40 | 8.10 | 3.72 | 58,900 |   |  
            | 3/14/2012 | -0.20 / -2.47% | 8.20 | 8.20 | 7.90 | 7.90 | 7.98 | 3.50 | 42,300 |   |  			
            | 3/13/2012 | +0.20 / +2.53% | 7.90 | 8.20 | 7.90 | 8.10 | 8.05 | 3.59 | 39,500 |   |  
            | 3/12/2012 | -0.40 / -4.82% | 8.00 | 8.10 | 7.80 | 7.90 | 7.91 | 3.50 | 50,300 |   |  			
            | 3/9/2012 | +0.30 / +3.75% | 8.40 | 8.40 | 8.00 | 8.30 | 8.13 | 3.67 | 31,900 |   |  
            | 3/8/2012 | -0.80 / -9.09% | 8.70 | 8.70 | 8.00 | 8.00 | 8.17 | 3.54 | 103,600 |   |  			
            | 3/7/2012 | 0.00 / 0.00% | 8.90 | 8.90 | 8.40 | 8.80 | 8.57 | 3.90 | 87,800 |   |  
            | 3/6/2012 | +0.10 / +1.15% | 9.30 | 9.30 | 8.50 | 8.80 | 9.00 | 3.90 | 245,100 |   |  			
            | 3/5/2012 | +0.40 / +4.82% | 8.60 | 8.70 | 8.60 | 8.70 | 8.70 | 3.85 | 80,800 |   |  
            | 3/2/2012 | +0.30 / +3.75% | 8.00 | 8.30 | 7.90 | 8.30 | 8.22 | 3.67 | 125,000 |   |  			
            | 3/1/2012 | -0.30 / -3.61% | 8.10 | 8.10 | 7.70 | 8.00 | 7.83 | 3.54 | 43,400 |   |  
            | 2/29/2012 | +0.20 / +2.47% | 8.10 | 8.40 | 8.00 | 8.30 | 8.22 | 3.67 | 71,300 |   |  			
            | 2/28/2012 | -0.70 / -7.95% | 8.50 | 8.80 | 8.10 | 8.10 | 8.32 | 3.59 | 50,300 |   |  
            | 2/27/2012 | +0.70 / +8.64% | 8.30 | 8.80 | 8.30 | 8.80 | 8.66 | 3.90 | 78,300 |   |  			
            | 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 |   |  |