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                    Closing price on 6/22/2012
                 |  |  
    
        |           
                
                    | Open | 9.00 |  
                    | High | 9.10 |  
                    | Low | 8.90 |  
                    | Volume | 8,600 |  
                    | Split-adjusted Price | 4.03 |  
                
             | 
 |  SD2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/22/2012 | -0.10 / -1.09% | 9.00 | 9.10 | 8.90 | 9.10 | 9.00 | 4.03 | 8,600 |   |  
            | 6/21/2012 | -0.10 / -1.08% | 9.10 | 9.20 | 9.00 | 9.20 | 9.05 | 4.07 | 16,800 |   |  			
            | 6/20/2012 | -0.10 / -1.06% | 9.30 | 9.30 | 9.10 | 9.30 | 9.14 | 4.12 | 21,400 |   |  
            | 6/19/2012 | -0.20 / -2.08% | 9.70 | 9.70 | 9.10 | 9.40 | 9.16 | 4.16 | 43,500 |   |  			
            | 6/18/2012 | +0.10 / +1.05% | 10.00 | 10.00 | 9.50 | 9.60 | 9.51 | 4.25 | 11,600 |   |  
            | 6/15/2012 | +0.20 / +2.15% | 9.60 | 9.60 | 9.30 | 9.50 | 9.45 | 4.21 | 5,400 |   |  			
            | 6/14/2012 | -0.10 / -1.06% | 9.40 | 9.40 | 9.20 | 9.30 | 9.29 | 4.12 | 11,300 |   |  
            | 6/13/2012 | 0.00 / 0.00% | 9.20 | 9.40 | 9.20 | 9.40 | 9.30 | 4.16 | 9,900 |   |  			
            | 6/12/2012 | -0.40 / -4.08% | 9.50 | 9.50 | 9.30 | 9.40 | 9.42 | 4.16 | 17,000 |   |  
            | 6/11/2012 | +0.10 / +1.03% | 9.60 | 9.80 | 9.50 | 9.80 | 9.60 | 4.34 | 9,300 |   |  			
            | 6/8/2012 | -0.20 / -2.02% | 10.00 | 10.10 | 9.50 | 9.70 | 9.73 | 4.29 | 22,900 |   |  
            | 6/7/2012 | +0.60 / +6.45% | 9.40 | 9.90 | 9.40 | 9.90 | 9.74 | 4.38 | 48,000 |   |  			
            | 6/6/2012 | +0.10 / +1.09% | 9.20 | 9.30 | 9.10 | 9.30 | 9.24 | 4.12 | 24,700 |   |  
            | 6/5/2012 | +0.10 / +1.10% | 8.80 | 9.20 | 8.60 | 9.20 | 9.03 | 4.07 | 23,000 |   |  			
            | 6/4/2012 | -0.30 / -3.19% | 9.00 | 9.10 | 8.80 | 9.10 | 8.93 | 4.03 | 44,400 |   |  
            | 6/1/2012 | 0.00 / 0.00% | 9.40 | 9.50 | 9.30 | 9.40 | 9.39 | 4.16 | 4,000 |   |  			
            | 5/31/2012 | -0.30 / -3.09% | 9.50 | 9.50 | 9.20 | 9.40 | 9.39 | 4.16 | 8,600 |   |  
            | 5/30/2012 | -0.10 / -1.02% | 9.70 | 9.70 | 9.60 | 9.70 | 9.62 | 4.29 | 7,900 |   |  			
            | 5/29/2012 | 0.00 / 0.00% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 4.34 | 200 |   |  
            | 5/28/2012 | +0.10 / +1.03% | 10.30 | 10.30 | 9.60 | 9.80 | 9.89 | 4.34 | 25,800 |   |  			
            | 5/25/2012 | +0.20 / +2.11% | 9.40 | 9.90 | 9.30 | 9.70 | 9.63 | 4.29 | 75,100 |   |  
            | 5/24/2012 | 0.00 / 0.00% | 9.10 | 9.50 | 9.00 | 9.50 | 9.06 | 4.21 | 74,400 |   |  			
            | 5/23/2012 | -0.70 / -6.86% | 10.10 | 10.10 | 9.50 | 9.50 | 9.55 | 4.21 | 38,000 |   |  
            | 5/22/2012 | +0.10 / +0.99% | 9.90 | 10.20 | 9.90 | 10.20 | 9.97 | 4.52 | 18,000 |   |  			
            | 5/21/2012 | +0.50 / +5.21% | 10.10 | 10.10 | 9.60 | 10.10 | 9.99 | 4.47 | 22,700 |   |  
            | 5/18/2012 | -0.20 / -2.04% | 9.50 | 9.60 | 9.20 | 9.60 | 9.40 | 4.25 | 59,500 |   |  			
            | 5/17/2012 | -0.40 / -3.92% | 10.40 | 10.40 | 9.80 | 9.80 | 9.98 | 4.34 | 29,100 |   |  
            | 5/16/2012 | +0.20 / +2.00% | 9.70 | 10.20 | 9.60 | 10.20 | 9.79 | 4.52 | 76,600 |   |  			
            | 5/15/2012 | -0.30 / -2.91% | 10.50 | 10.50 | 9.70 | 10.00 | 9.93 | 4.43 | 99,700 |   |  
            | 5/14/2012 | -0.70 / -6.36% | 11.00 | 11.00 | 10.30 | 10.30 | 10.38 | 4.56 | 97,400 |   |  |