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                    Closing price on 8/6/2010
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                    | Open | 28.50 |  
                    | High | 29.00 |  
                    | Low | 28.30 |  
                    | Volume | 5,500 |  
                    | Split-adjusted Price | 28.30 |  
                
             | 
 |  SDB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/6/2010 | -0.20 / -0.70% | 28.50 | 29.00 | 28.30 | 28.30 | 28.50 | 28.30 | 5,500 |   |  
            | 8/5/2010 | -0.50 / -1.72% | 28.50 | 28.90 | 28.50 | 28.50 | 28.50 | 28.50 | 6,600 |   |  			
            | 8/4/2010 | 0.00 / 0.00% | 28.80 | 29.00 | 28.80 | 29.00 | 29.00 | 29.00 | 4,200 |   |  
            | 8/3/2010 | -1.30 / -4.29% | 30.50 | 30.50 | 29.00 | 29.00 | 29.00 | 29.00 | 6,900 |   |  			
            | 8/2/2010 | +0.30 / +1.00% | 30.30 | 30.30 | 30.30 | 30.30 | 30.30 | 30.30 | 100 |   |  
            | 7/30/2010 | -0.50 / -1.64% | 30.00 | 30.80 | 29.50 | 30.00 | 30.50 | 30.00 | 13,900 |   |  			
            | 7/29/2010 | +1.10 / +3.74% | 30.50 | 30.50 | 28.50 | 30.50 | 30.50 | 30.50 | 10,000 |   |  
            | 7/28/2010 | -1.60 / -5.16% | 32.00 | 32.00 | 29.00 | 29.40 | 29.40 | 29.40 | 26,900 |   |  			
            | 7/27/2010 | 0.00 / 0.00% | 31.00 | 31.00 | 31.00 | 31.00 | 31.00 | 31.00 | 15,400 |   |  
            | 7/26/2010 | 0.00 / 0.00% | 31.10 | 31.10 | 31.00 | 31.00 | 31.00 | 31.00 | 13,800 |   |  			
            | 7/23/2010 | -0.70 / -2.21% | 30.90 | 31.50 | 30.70 | 31.00 | 31.03 | 31.00 | 14,000 |   |  
            | 7/22/2010 | +0.70 / +2.26% | 30.00 | 31.70 | 30.00 | 31.70 | 31.70 | 31.70 | 7,000 |   |  			
            | 7/21/2010 | -0.40 / -1.27% | 32.40 | 32.40 | 31.00 | 31.00 | 31.00 | 31.00 | 7,900 |   |  
            | 7/20/2010 | +0.20 / +0.64% | 31.30 | 31.70 | 31.00 | 31.40 | 31.40 | 31.40 | 36,900 |   |  			
            | 7/19/2010 | -0.90 / -2.80% | 32.40 | 32.40 | 31.20 | 31.20 | 31.20 | 31.20 | 35,900 |   |  
            | 7/16/2010 | -0.40 / -1.23% | 32.60 | 32.60 | 31.30 | 32.10 | 32.50 | 32.10 | 25,400 |   |  			
            | 7/15/2010 | +0.50 / +1.56% | 31.50 | 32.70 | 31.00 | 32.50 | 32.50 | 32.50 | 20,600 |   |  
            | 7/14/2010 | -1.00 / -3.03% | 34.00 | 34.00 | 32.00 | 32.00 | 32.00 | 32.00 | 8,700 |   |  			
            | 7/13/2010 | +1.90 / +6.11% | 33.00 | 33.00 | 31.40 | 33.00 | 33.00 | 33.00 | 32,900 |   |  
            | 7/12/2010 | +0.10 / +0.32% | 31.80 | 31.80 | 31.10 | 31.10 | 31.10 | 31.10 | 14,700 |   |  			
            | 7/9/2010 | +0.40 / +1.31% | 31.80 | 31.80 | 31.00 | 31.00 | 31.40 | 31.00 | 2,500 |   |  
            | 7/8/2010 | -1.20 / -3.77% | 33.00 | 33.00 | 30.20 | 30.60 | 30.60 | 30.60 | 7,600 |   |  			
            | 7/7/2010 | +0.40 / +1.27% | 32.00 | 32.30 | 31.00 | 31.80 | 31.80 | 31.80 | 5,700 |   |  
            | 7/6/2010 | -1.30 / -3.98% | 32.40 | 32.40 | 31.40 | 31.40 | 31.40 | 31.40 | 5,900 |   |  			
            | 7/5/2010 | +0.20 / +0.62% | 32.90 | 32.90 | 31.70 | 32.70 | 32.70 | 32.70 | 16,300 |   |  
            | 7/2/2010 | 0.00 / 0.00% | 34.00 | 34.00 | 32.10 | 32.50 | 32.50 | 32.50 | 12,800 |   |  			
            | 7/1/2010 | -0.30 / -0.91% | 33.50 | 33.60 | 32.50 | 32.50 | 32.50 | 32.50 | 32,100 |   |  
            | 6/30/2010 | -1.20 / -3.53% | 31.30 | 33.50 | 31.30 | 32.80 | 32.80 | 32.80 | 27,500 |   |  			
            | 6/29/2010 | +0.30 / +0.89% | 34.00 | 34.20 | 33.30 | 34.00 | 34.00 | 34.00 | 35,200 |   |  
            | 6/28/2010 | +0.30 / +0.90% | 33.80 | 33.80 | 32.40 | 33.70 | 33.70 | 33.70 | 26,500 |   |  |