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                    Closing price on 10/22/2009
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        |           
                
                    | Open | 38.00 |  
                    | High | 39.00 |  
                    | Low | 35.30 |  
                    | Volume | 241,100 |  
                    | Split-adjusted Price | 35.70 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 10/7/2009 | +1.50 / +6.73% | 23.80 | 23.80 | 23.60 | 23.80 | 23.79 | 23.80 | 117,200 |   |  			
            | 10/6/2009 | +1.00 / +4.69% | 21.40 | 22.30 | 21.40 | 22.30 | 22.28 | 22.30 | 227,400 |   |  
            | 10/5/2009 | +1.20 / +5.97% | 18.60 | 21.40 | 18.60 | 21.30 | 20.92 | 21.30 | 516,800 |   |  			
            | 10/2/2009 | -0.90 / -4.29% | 21.40 | 21.40 | 20.00 | 20.10 | 20.01 | 20.10 | 328,800 |   |  
            | 10/1/2009 | +0.40 / +1.94% | 22.00 | 22.00 | 20.00 | 21.00 | 21.50 | 21.00 | 634,100 |   |  			
            | 9/30/2009 | +1.30 / +6.74% | 20.60 | 20.60 | 20.60 | 20.60 | 20.60 | 20.60 | 138,700 |   |  
            | 9/29/2009 | +1.10 / +6.04% | 19.30 | 19.30 | 19.30 | 19.30 | 19.30 | 19.30 | 141,500 |   |  			
            | 9/28/2009 | +0.30 / +1.68% | 18.20 | 18.20 | 17.50 | 18.20 | 18.08 | 18.20 | 319,400 |   |  
            | 9/25/2009 | +1.00 / +5.92% | 16.80 | 18.00 | 16.00 | 17.90 | 17.12 | 17.90 | 364,600 |   |  			
            | 9/24/2009 | -0.50 / -2.87% | 17.20 | 17.50 | 16.70 | 16.90 | 16.87 | 16.90 | 390,500 |   |  
            | 9/23/2009 | +0.40 / +2.35% | 18.00 | 18.00 | 17.00 | 17.40 | 17.91 | 17.40 | 334,700 |   |  			
            | 9/22/2009 | +1.10 / +6.92% | 17.00 | 17.00 | 16.50 | 17.00 | 16.91 | 17.00 | 465,100 |   |  
            | 9/21/2009 | +0.80 / +5.30% | 15.90 | 15.90 | 15.50 | 15.90 | 15.89 | 15.90 | 199,600 |   |  			
            | 9/18/2009 | +1.10 / +7.86% | 14.40 | 15.10 | 14.00 | 15.10 | 14.90 | 15.10 | 497,800 |   |  
            | 9/17/2009 | -0.40 / -2.78% | 14.80 | 14.80 | 13.80 | 14.00 | 14.16 | 14.00 | 84,500 |   |  			
            | 9/16/2009 | -0.70 / -4.64% | 15.40 | 15.50 | 14.40 | 14.40 | 14.83 | 14.40 | 134,300 |   |  
            | 9/15/2009 | +0.50 / +3.42% | 15.50 | 15.50 | 14.70 | 15.10 | 14.97 | 15.10 | 430,500 |   |  			
            | 9/14/2009 | +0.70 / +5.04% | 13.70 | 14.60 | 13.70 | 14.60 | 14.52 | 14.60 | 562,400 |   |  
            | 9/11/2009 | +0.40 / +2.96% | 13.40 | 14.00 | 13.40 | 13.90 | 13.71 | 13.90 | 123,200 |   |  |