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                    Closing price on 11/18/2009
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        |           
                
                    | Open | 28.50 |  
                    | High | 29.50 |  
                    | Low | 27.80 |  
                    | Volume | 253,000 |  
                    | Split-adjusted Price | 27.90 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/18/2009 | -1.80 / -6.06% | 28.50 | 29.50 | 27.80 | 27.90 | 28.25 | 27.90 | 253,000 |   |  
            | 11/17/2009 | +0.90 / +3.13% | 30.60 | 30.70 | 28.50 | 29.70 | 29.79 | 29.70 | 239,700 |   |  			
            | 11/16/2009 | +1.80 / +6.67% | 27.50 | 28.80 | 27.50 | 28.80 | 28.67 | 28.80 | 361,000 |   |  
            | 11/13/2009 | -0.10 / -0.37% | 26.50 | 27.50 | 26.00 | 27.00 | 26.96 | 27.00 | 150,900 |   |  			
            | 11/12/2009 | +0.80 / +3.04% | 26.90 | 27.10 | 26.00 | 27.10 | 26.94 | 27.10 | 229,600 |   |  
            | 11/11/2009 | +2.00 / +8.23% | 25.70 | 26.40 | 23.40 | 26.30 | 25.38 | 26.30 | 208,500 |   |  			
            | 11/10/2009 | -1.00 / -3.95% | 24.60 | 26.90 | 24.10 | 24.30 | 24.72 | 24.30 | 187,100 |   |  
            | 11/9/2009 | -1.80 / -6.64% | 28.90 | 28.90 | 25.30 | 25.30 | 25.90 | 25.30 | 169,900 |   |  			
            | 11/6/2009 | +1.70 / +6.69% | 27.10 | 27.10 | 26.00 | 27.10 | 27.07 | 27.10 | 413,200 |   |  
            | 11/5/2009 | +1.40 / +5.83% | 25.00 | 25.40 | 25.00 | 25.40 | 25.37 | 25.40 | 63,400 |   |  			
            | 11/4/2009 | 0.00 / 0.00% | 22.60 | 25.80 | 22.60 | 24.00 | 23.78 | 24.00 | 264,000 |   |  
            | 11/3/2009 | -1.70 / -6.61% | 24.20 | 25.80 | 24.00 | 24.00 | 24.26 | 24.00 | 98,000 |   |  			
            | 11/2/2009 | -1.90 / -6.88% | 29.00 | 29.00 | 25.70 | 25.70 | 25.81 | 25.70 | 220,200 |   |  
            | 10/30/2009 | +1.90 / +7.39% | 25.80 | 27.60 | 25.80 | 27.60 | 27.58 | 27.60 | 63,700 |   |  			
            | 10/29/2009 | -1.80 / -6.55% | 25.70 | 27.60 | 25.70 | 25.70 | 25.79 | 25.70 | 214,400 |   |  
            | 10/28/2009 | -1.70 / -5.82% | 27.20 | 30.00 | 27.20 | 27.50 | 27.55 | 27.50 | 614,600 |   |  			
            | 10/27/2009 | -2.10 / -6.71% | 29.20 | 29.20 | 29.20 | 29.20 | 29.20 | 29.20 | 5,200 |   |  
            | 10/26/2009 | -2.10 / -6.29% | 31.30 | 31.30 | 31.30 | 31.30 | 31.30 | 31.30 | 20,400 |   |  			
            | 10/23/2009 | -2.30 / -6.44% | 35.50 | 35.50 | 33.40 | 33.40 | 33.56 | 33.40 | 125,400 |   |  
            | 10/22/2009 | -2.20 / -5.80% | 38.00 | 39.00 | 35.30 | 35.70 | 35.94 | 35.70 | 241,100 |   |  			
            | 10/21/2009 | +0.30 / +0.80% | 38.40 | 38.50 | 37.30 | 37.90 | 37.93 | 37.90 | 237,600 |   |  
            | 10/20/2009 | +1.60 / +4.44% | 36.80 | 37.70 | 36.10 | 37.60 | 37.04 | 37.60 | 417,700 |   |  			
            | 10/19/2009 | -1.10 / -2.96% | 37.00 | 37.50 | 34.50 | 36.00 | 35.43 | 36.00 | 413,700 |   |  
            | 10/16/2009 | +2.20 / +6.30% | 37.30 | 37.30 | 34.90 | 37.10 | 37.00 | 37.10 | 714,100 |   |  			
            | 10/15/2009 | +2.00 / +6.08% | 34.90 | 34.90 | 34.90 | 34.90 | 34.90 | 34.90 | 66,400 |   |  
            | 10/14/2009 | +2.10 / +6.82% | 32.90 | 32.90 | 31.70 | 32.90 | 32.65 | 32.90 | 479,000 |   |  			
            | 10/13/2009 | +2.00 / +6.94% | 30.80 | 30.80 | 30.70 | 30.80 | 30.80 | 30.80 | 306,100 |   |  
            | 10/12/2009 | +1.80 / +6.67% | 28.80 | 28.80 | 28.80 | 28.80 | 28.80 | 28.80 | 62,100 |   |  			
            | 10/9/2009 | +1.60 / +6.30% | 27.00 | 27.00 | 27.00 | 27.00 | 27.00 | 27.00 | 162,700 |   |  
            | 10/8/2009 | +1.60 / +6.72% | 25.40 | 25.40 | 24.20 | 25.40 | 25.30 | 25.40 | 613,500 |   |  |