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                    Closing price on 1/18/2010
                 |  |  
    
        |           
                
                    | Open | 43.50 |  
                    | High | 43.50 |  
                    | Low | 43.20 |  
                    | Volume | 57,900 |  
                    | Split-adjusted Price | 19.19 |  
                
             | 
 |  SDA Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/18/2010 | -2.20 / -4.85% | 43.50 | 43.50 | 43.20 | 43.20 | 43.20 | 19.19 | 57,900 |   |  
            | 1/15/2010 | -1.20 / -2.58% | 47.80 | 48.00 | 43.60 | 45.40 | 45.40 | 20.16 | 118,400 |   |  			
            | 1/14/2010 | +0.80 / +1.75% | 46.50 | 46.60 | 46.00 | 46.60 | 46.60 | 20.70 | 114,300 |   |  
            | 1/13/2010 | +1.90 / +4.33% | 44.00 | 47.00 | 41.50 | 45.80 | 45.80 | 20.34 | 151,200 |   |  			
            | 1/12/2010 | -3.10 / -6.60% | 47.00 | 47.10 | 43.90 | 43.90 | 43.90 | 19.50 | 163,000 |   |  
            | 1/11/2010 | -1.00 / -2.08% | 47.00 | 50.00 | 46.10 | 47.00 | 47.00 | 20.87 | 78,700 |   |  			
            | 1/8/2010 | +1.50 / +3.23% | 47.00 | 51.20 | 45.30 | 48.00 | 48.00 | 21.32 | 169,200 |   |  
            | 1/7/2010 | -1.00 / -2.11% | 48.50 | 49.80 | 46.00 | 46.50 | 46.50 | 20.65 | 262,400 |   |  			
            | 1/6/2010 | -1.90 / -3.85% | 48.00 | 51.80 | 47.40 | 47.50 | 47.50 | 21.10 | 343,000 |   |  
            | 1/5/2010 | +0.70 / +1.44% | 51.60 | 51.60 | 45.10 | 49.40 | 49.40 | 21.94 | 283,700 |   |  			
            | 1/4/2010 | +3.40 / +7.51% | 46.00 | 48.70 | 46.00 | 48.70 | 48.70 | 21.63 | 61,900 |   |  
            | 12/31/2009 | +1.80 / +4.14% | 45.00 | 46.00 | 43.20 | 45.30 | 45.30 | 20.12 | 215,800 |   |  			
            | 12/30/2009 | +4.10 / +10.41% | 40.50 | 43.50 | 38.50 | 43.50 | 43.50 | 19.32 | 277,900 |   |  
            | 12/29/2009 | -2.00 / -4.83% | 40.20 | 41.80 | 39.40 | 39.40 | 39.40 | 17.50 | 162,600 |   |  			
            | 12/28/2009 | +2.60 / +6.70% | 41.50 | 41.50 | 39.00 | 41.40 | 41.40 | 18.39 | 191,700 |   |  
            | 12/25/2009 | +1.70 / +4.58% | 38.80 | 38.80 | 38.80 | 38.80 | 38.80 | 17.23 | 25,200 |   |  			
            | 12/24/2009 | +1.10 / +3.06% | 34.70 | 37.10 | 34.00 | 37.10 | 37.10 | 16.48 | 107,000 |   |  
            | 12/23/2009 | +3.20 / +9.76% | 33.30 | 36.50 | 32.00 | 36.00 | 36.00 | 15.99 | 187,100 |   |  			
            | 12/22/2009 | +0.10 / +0.31% | 34.80 | 34.90 | 32.50 | 32.80 | 32.80 | 14.57 | 107,300 |   |  
            | 12/21/2009 | +1.90 / +6.17% | 32.50 | 32.70 | 32.00 | 32.70 | 32.70 | 14.52 | 46,900 |   |  			
            | 12/18/2009 | +2.00 / +6.94% | 29.00 | 30.80 | 29.00 | 30.80 | 30.80 | 13.68 | 83,900 |   |  
            | 12/17/2009 | -1.80 / -5.88% | 28.90 | 29.90 | 28.80 | 28.80 | 28.80 | 12.79 | 97,200 |   |  			
            | 12/16/2009 | -1.40 / -4.38% | 33.00 | 33.00 | 30.60 | 30.60 | 30.60 | 13.59 | 20,800 |   |  
            | 12/15/2009 | -2.00 / -5.88% | 34.20 | 34.20 | 32.00 | 32.00 | 32.00 | 14.21 | 29,900 |   |  			
            | 12/14/2009 | +2.10 / +6.58% | 30.00 | 34.10 | 30.00 | 34.00 | 34.00 | 15.10 | 64,500 |   |  
            | 12/11/2009 | -1.60 / -4.78% | 33.00 | 33.00 | 31.90 | 31.90 | 31.90 | 14.17 | 47,600 |   |  			
            | 12/10/2009 | -2.30 / -6.42% | 35.00 | 36.00 | 33.30 | 33.50 | 33.50 | 14.88 | 59,400 |   |  
            | 12/9/2009 | -2.00 / -5.29% | 36.00 | 36.20 | 35.80 | 35.80 | 35.80 | 15.90 | 48,500 |   |  			
            | 12/8/2009 | -2.80 / -6.90% | 40.50 | 40.50 | 37.80 | 37.80 | 37.80 | 16.79 | 72,100 |   |  
            | 12/7/2009 | +0.10 / +0.25% | 41.00 | 41.00 | 39.80 | 40.60 | 40.60 | 18.03 | 51,300 |   |  |