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                    Closing price on 6/10/2010
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                    | Open | 30.30 |  
                    | High | 30.30 |  
                    | Low | 29.00 |  
                    | Volume | 8,700 |  
                    | Split-adjusted Price | 29.00 |  
                
             | 
 |  SDB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/10/2010 | +0.10 / +0.35% | 30.30 | 30.30 | 29.00 | 29.00 | 29.00 | 29.00 | 8,700 |   |  
            | 6/9/2010 | -0.50 / -1.70% | 30.00 | 30.20 | 28.90 | 28.90 | 28.90 | 28.90 | 6,900 |   |  			
            | 6/8/2010 | +0.90 / +3.16% | 29.50 | 29.50 | 28.90 | 29.40 | 29.40 | 29.40 | 7,100 |   |  
            | 6/7/2010 | -1.50 / -5.00% | 28.80 | 28.80 | 28.40 | 28.50 | 28.50 | 28.50 | 40,000 |   |  			
            | 6/4/2010 | -0.60 / -1.96% | 31.90 | 31.90 | 30.00 | 30.00 | 30.60 | 30.00 | 20,200 |   |  
            | 6/3/2010 | -0.30 / -0.97% | 31.90 | 32.20 | 30.40 | 30.60 | 30.60 | 30.60 | 12,800 |   |  			
            | 6/2/2010 | +1.80 / +6.19% | 30.00 | 31.10 | 29.80 | 30.90 | 30.90 | 30.90 | 21,300 |   |  
            | 6/1/2010 | -1.00 / -3.32% | 29.00 | 30.30 | 28.80 | 29.10 | 29.10 | 29.10 | 18,500 |   |  			
            | 5/31/2010 | -2.40 / -7.38% | 30.50 | 30.80 | 30.10 | 30.10 | 30.10 | 30.10 | 11,500 |   |  
            | 5/28/2010 | +2.00 / +6.56% | 32.00 | 32.50 | 31.20 | 32.50 | 32.05 | 32.50 | 60,200 |   |  			
            | 5/27/2010 | -0.90 / -2.87% | 31.00 | 31.00 | 30.00 | 30.50 | 30.50 | 30.50 | 14,300 |   |  
            | 5/26/2010 | +2.40 / +8.28% | 30.00 | 31.40 | 29.40 | 31.40 | 31.40 | 31.40 | 37,000 |   |  			
            | 5/25/2010 | -2.00 / -6.45% | 30.00 | 30.00 | 28.80 | 29.00 | 29.00 | 29.00 | 54,700 |   |  
            | 5/24/2010 | -0.30 / -0.96% | 32.00 | 32.00 | 30.00 | 31.00 | 31.00 | 31.00 | 22,700 |   |  			
            | 5/21/2010 | -2.70 / -7.94% | 34.00 | 34.00 | 31.30 | 31.30 | 34.00 | 31.30 | 50,300 |   |  
            | 5/20/2010 | +1.70 / +5.26% | 33.50 | 34.80 | 31.50 | 34.00 | 34.00 | 34.00 | 36,900 |   |  			
            | 5/19/2010 | -2.70 / -7.71% | 34.70 | 34.70 | 32.30 | 32.30 | 32.30 | 32.30 | 49,200 |   |  
            | 5/18/2010 | -1.00 / -2.78% | 35.50 | 35.50 | 34.40 | 35.00 | 35.00 | 35.00 | 41,700 |   |  			
            | 5/17/2010 | -1.70 / -4.51% | 38.10 | 38.50 | 35.80 | 36.00 | 36.00 | 36.00 | 38,400 |   |  
            | 5/14/2010 | -2.30 / -5.75% | 40.50 | 40.80 | 37.70 | 37.70 | 40.00 | 37.70 | 42,000 |   |  			
            | 5/13/2010 | -0.70 / -1.72% | 43.20 | 43.20 | 38.10 | 40.00 | 40.00 | 40.00 | 53,100 |   |  
            | 5/12/2010 | +2.20 / +5.71% | 39.50 | 40.70 | 39.50 | 40.70 | 40.70 | 40.70 | 257,200 |   |  			
            | 5/11/2010 | +2.50 / +6.94% | 37.00 | 38.50 | 37.00 | 38.50 | 38.50 | 38.50 | 159,500 |   |  
            | 5/10/2010 | -0.10 / -0.28% | 36.00 | 36.50 | 35.00 | 36.00 | 36.00 | 36.00 | 62,700 |   |  			
            | 5/7/2010 | 0.00 / 0.00% | 36.00 | 36.50 | 35.50 | 36.10 | 36.10 | 36.10 | 75,300 |   |  
            | 5/6/2010 | +0.10 / +0.28% | 36.80 | 36.80 | 35.60 | 36.10 | 36.10 | 36.10 | 39,100 |   |  			
            | 5/5/2010 | -1.10 / -2.96% | 36.10 | 37.20 | 36.00 | 36.00 | 36.00 | 36.00 | 38,300 |   |  
            | 5/4/2010 | -0.40 / -1.07% | 38.00 | 38.00 | 36.80 | 37.10 | 37.10 | 37.10 | 114,000 |   |  			
            | 4/29/2010 | +2.30 / +6.53% | 36.00 | 37.50 | 35.70 | 37.50 | 36.68 | 37.50 | 78,900 |   |  
            | 4/28/2010 | -0.10 / -0.28% | 35.00 | 35.50 | 34.80 | 35.20 | 35.20 | 35.20 | 38,000 |   |  |