| 
    
        
            | 
                    Closing price on 3/12/2013
                 |  |  
    
        |           
                
                    | Open | 4.60 |  
                    | High | 4.70 |  
                    | Low | 4.50 |  
                    | Volume | 2,500 |  
                    | Split-adjusted Price | 4.70 |  
                
             | 
 |  SDU Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/12/2013 | -0.20 / -4.08% | 4.60 | 4.70 | 4.50 | 4.70 | 4.70 | 4.70 | 2,500 |   |  
            | 3/11/2013 | +0.10 / +2.08% | 4.80 | 4.90 | 4.40 | 4.90 | 4.90 | 4.90 | 8,500 |   |  			
            | 3/8/2013 | 0.00 / 0.00% | 4.50 | 4.80 | 4.50 | 4.80 | 4.80 | 4.80 | 1,300 |   |  
            | 3/7/2013 | 0.00 / 0.00% | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 4.80 | 0 |   |  			
            | 3/6/2013 | +0.10 / +2.13% | 4.70 | 4.80 | 4.70 | 4.80 | 4.80 | 4.80 | 1,100 |   |  
            | 3/5/2013 | -0.20 / -4.08% | 4.50 | 4.70 | 4.50 | 4.70 | 4.70 | 4.70 | 5,700 |   |  			
            | 3/4/2013 | 0.00 / 0.00% | 4.70 | 4.90 | 4.70 | 4.90 | 4.90 | 4.90 | 3,900 |   |  
            | 3/1/2013 | 0.00 / 0.00% | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 0 |   |  			
            | 2/28/2013 | +0.10 / +2.08% | 4.80 | 4.90 | 4.60 | 4.90 | 4.90 | 4.90 | 6,800 |   |  
            | 2/27/2013 | -0.10 / -2.04% | 4.70 | 4.80 | 4.70 | 4.80 | 4.80 | 4.80 | 2,000 |   |  			
            | 2/26/2013 | -0.30 / -5.77% | 5.00 | 5.00 | 4.70 | 4.90 | 4.90 | 4.90 | 18,400 |   |  
            | 2/25/2013 | +0.10 / +1.96% | 5.00 | 5.20 | 4.90 | 5.20 | 5.20 | 5.20 | 4,700 |   |  			
            | 2/22/2013 | 0.00 / 0.00% | 5.00 | 5.10 | 5.00 | 5.10 | 5.10 | 5.10 | 11,500 |   |  
            | 2/21/2013 | +0.10 / +2.00% | 5.10 | 5.40 | 5.00 | 5.10 | 5.10 | 5.10 | 52,900 |   |  			
            | 2/20/2013 | -0.10 / -1.96% | 5.10 | 5.10 | 4.90 | 5.00 | 5.00 | 5.00 | 17,500 |   |  
            | 2/19/2013 | 0.00 / 0.00% | 5.00 | 5.10 | 5.00 | 5.10 | 5.10 | 5.10 | 12,200 |   |  			
            | 2/18/2013 | 0.00 / 0.00% | 5.10 | 5.10 | 4.90 | 5.10 | 5.10 | 5.10 | 34,200 |   |  
            | 2/8/2013 | +0.20 / +4.08% | 5.00 | 5.10 | 5.00 | 5.10 | 5.10 | 5.10 | 1,800 |   |  			
            | 2/7/2013 | +0.30 / +6.52% | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 200 |   |  
            | 2/6/2013 | -0.10 / -2.13% | 4.70 | 4.70 | 4.60 | 4.60 | 4.60 | 4.60 | 11,100 |   |  			
            | 2/5/2013 | -0.10 / -2.08% | 4.70 | 4.70 | 4.60 | 4.70 | 4.70 | 4.70 | 1,200 |   |  
            | 2/4/2013 | -0.20 / -4.00% | 4.90 | 4.90 | 4.80 | 4.80 | 4.80 | 4.80 | 2,800 |   |  			
            | 2/1/2013 | -0.20 / -3.85% | 5.50 | 5.50 | 4.70 | 5.00 | 5.00 | 5.00 | 32,100 |   |  
            | 1/31/2013 | +0.30 / +6.12% | 5.00 | 5.20 | 5.00 | 5.20 | 5.20 | 5.20 | 18,200 |   |  			
            | 1/30/2013 | -0.20 / -3.92% | 4.60 | 5.00 | 4.60 | 4.90 | 4.90 | 4.90 | 78,900 |   |  
            | 1/29/2013 | +0.10 / +2.00% | 5.10 | 5.10 | 5.10 | 5.10 | 5.10 | 5.10 | 100 |   |  			
            | 1/28/2013 | -0.10 / -1.96% | 5.00 | 5.10 | 4.60 | 5.00 | 5.00 | 5.00 | 33,900 |   |  
            | 1/25/2013 | +0.20 / +4.08% | 5.20 | 5.20 | 4.60 | 5.10 | 5.10 | 5.10 | 5,400 |   |  			
            | 1/24/2013 | +0.20 / +4.26% | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 4.90 | 200 |   |  
            | 1/23/2013 | -0.50 / -9.62% | 4.70 | 4.70 | 4.70 | 4.70 | 4.70 | 4.70 | 10,200 |   |  |