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                    Closing price on 6/8/2010
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        |           
                
                    | Open | 42.00 |  
                    | High | 44.00 |  
                    | Low | 42.00 |  
                    | Volume | 61,200 |  
                    | Split-adjusted Price | 19.50 |  
                
             | 
 |  SDA Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/8/2010 | +1.90 / +4.52% | 42.00 | 44.00 | 42.00 | 43.90 | 43.90 | 19.50 | 61,200 |   |  
            | 6/7/2010 | -3.00 / -6.67% | 43.00 | 43.00 | 41.80 | 42.00 | 42.00 | 18.65 | 78,400 |   |  			
            | 6/4/2010 | +0.40 / +0.90% | 45.00 | 45.80 | 44.20 | 45.00 | 45.00 | 19.99 | 56,800 |   |  
            | 6/3/2010 | 0.00 / 0.00% | 47.00 | 47.00 | 44.50 | 44.60 | 44.60 | 19.81 | 74,000 |   |  			
            | 6/2/2010 | +0.30 / +0.68% | 42.50 | 45.40 | 42.50 | 44.60 | 44.60 | 19.81 | 26,900 |   |  
            | 6/1/2010 | -0.70 / -1.56% | 44.00 | 47.00 | 43.00 | 44.30 | 44.30 | 19.67 | 65,800 |   |  			
            | 5/31/2010 | -2.20 / -4.66% | 45.20 | 47.00 | 44.20 | 45.00 | 45.00 | 19.99 | 44,900 |   |  
            | 5/28/2010 | +2.70 / +6.07% | 46.50 | 47.20 | 46.50 | 47.20 | 47.20 | 20.96 | 225,400 |   |  			
            | 5/27/2010 | +1.50 / +3.49% | 43.00 | 45.20 | 42.60 | 44.50 | 44.50 | 19.76 | 97,500 |   |  
            | 5/26/2010 | +3.20 / +8.04% | 41.30 | 43.00 | 41.30 | 43.00 | 43.00 | 19.10 | 71,700 |   |  			
            | 5/25/2010 | -2.20 / -5.24% | 39.00 | 41.90 | 39.00 | 39.80 | 39.80 | 17.68 | 113,400 |   |  
            | 5/24/2010 | +0.90 / +2.19% | 40.40 | 42.00 | 38.80 | 42.00 | 42.00 | 18.65 | 59,000 |   |  			
            | 5/21/2010 | -4.20 / -9.27% | 43.50 | 43.50 | 41.10 | 41.10 | 41.10 | 18.25 | 163,800 |   |  
            | 5/20/2010 | +1.30 / +2.95% | 41.00 | 46.80 | 40.80 | 45.30 | 45.30 | 20.12 | 91,200 |   |  			
            | 5/19/2010 | -2.50 / -5.38% | 46.00 | 46.00 | 43.60 | 44.00 | 44.00 | 19.54 | 239,300 |   |  
            | 5/18/2010 | -1.00 / -2.11% | 47.50 | 47.50 | 46.20 | 46.50 | 46.50 | 20.65 | 155,200 |   |  			
            | 5/17/2010 | -2.80 / -5.57% | 50.00 | 50.00 | 47.00 | 47.50 | 47.50 | 21.10 | 49,400 |   |  
            | 5/14/2010 | +1.20 / +2.44% | 50.30 | 50.50 | 49.30 | 50.30 | 50.30 | 22.34 | 92,500 |   |  			
            | 5/13/2010 | +0.20 / +0.41% | 48.50 | 51.00 | 48.50 | 49.10 | 49.10 | 21.81 | 121,000 |   |  
            | 5/12/2010 | -3.10 / -5.96% | 50.10 | 53.00 | 48.90 | 48.90 | 48.90 | 21.72 | 150,400 |   |  			
            | 5/11/2010 | -2.00 / -3.70% | 55.90 | 56.00 | 51.40 | 52.00 | 52.00 | 23.09 | 184,100 |   |  
            | 5/10/2010 | -0.60 / -1.10% | 56.50 | 57.00 | 53.00 | 54.00 | 54.00 | 23.98 | 140,100 |   |  			
            | 5/7/2010 | -2.60 / -4.55% | 57.00 | 57.00 | 54.50 | 54.60 | 54.60 | 24.25 | 159,400 |   |  
            | 5/6/2010 | +0.70 / +1.24% | 56.00 | 58.00 | 56.00 | 57.20 | 57.20 | 25.40 | 150,600 |   |  			
            | 5/5/2010 | -0.30 / -0.53% | 55.90 | 56.70 | 55.00 | 56.50 | 56.50 | 25.09 | 132,300 |   |  
            | 5/4/2010 | -0.10 / -0.18% | 53.00 | 58.30 | 53.00 | 56.80 | 56.80 | 25.23 | 206,900 |   |  			
            | 4/29/2010 | +0.80 / +1.43% | 55.50 | 58.00 | 55.50 | 56.90 | 56.90 | 25.27 | 235,600 |   |  
            | 4/28/2010 | -0.70 / -1.23% | 57.90 | 57.90 | 56.10 | 56.10 | 56.10 | 24.92 | 177,000 |   |  			
            | 4/27/2010 | +0.60 / +1.07% | 57.50 | 58.00 | 56.30 | 56.80 | 56.80 | 25.23 | 147,400 |   |  
            | 4/26/2010 | -1.90 / -3.27% | 58.00 | 58.50 | 56.00 | 56.20 | 56.20 | 24.96 | 152,500 |   |  |