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                    Closing price on 9/24/2009
                 |  |  
    
        |           
                
                    | Open | 41.00 |  
                    | High | 42.50 |  
                    | Low | 40.50 |  
                    | Volume | 186,200 |  
                    | Split-adjusted Price | 29.68 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/24/2009 | -0.80 / -1.93% | 41.00 | 42.50 | 40.50 | 40.60 | 40.87 | 29.68 | 186,200 |   |  
            | 9/23/2009 | 0.00 / 0.00% | 44.20 | 44.20 | 41.10 | 41.40 | 43.31 | 30.27 | 316,000 |   |  			
            | 9/22/2009 | +2.60 / +6.70% | 41.40 | 41.40 | 41.40 | 41.40 | 41.40 | 30.27 | 209,600 |   |  
            | 9/21/2009 | 0.00 / 0.00% | 37.00 | 38.80 | 37.00 | 38.80 | 38.67 | 28.37 | 266,400 |   |  			
            | 9/18/2009 | +0.70 / +1.95% | 35.00 | 37.00 | 34.50 | 36.60 | 36.29 | 26.76 | 168,000 |   |  
            | 9/17/2009 | -1.40 / -3.75% | 38.00 | 38.00 | 35.70 | 35.90 | 36.14 | 26.25 | 198,100 |   |  			
            | 9/16/2009 | +0.40 / +1.08% | 38.10 | 38.70 | 37.00 | 37.30 | 38.31 | 27.27 | 216,400 |   |  
            | 9/15/2009 | +1.30 / +3.65% | 35.50 | 36.90 | 34.50 | 36.90 | 36.16 | 26.98 | 220,000 |   |  			
            | 9/14/2009 | 0.00 / 0.00% | 33.50 | 35.60 | 33.30 | 35.60 | 34.46 | 26.03 | 371,800 |   |  
            | 9/11/2009 | +0.50 / +1.52% | 32.30 | 33.80 | 32.30 | 33.50 | 33.33 | 24.49 | 142,700 |   |  			
            | 9/10/2009 | -0.10 / -0.30% | 33.60 | 33.60 | 31.80 | 33.00 | 32.41 | 24.13 | 120,500 |   |  
            | 9/9/2009 | +2.10 / +6.77% | 33.10 | 33.10 | 32.30 | 33.10 | 32.95 | 24.20 | 445,600 |   |  			
            | 9/8/2009 | +1.50 / +5.08% | 30.00 | 31.00 | 30.00 | 31.00 | 30.98 | 22.67 | 133,900 |   |  
            | 9/7/2009 | 0.00 / 0.00% | 28.20 | 29.50 | 28.20 | 29.50 | 28.99 | 21.57 | 90,600 |   |  			
            | 9/4/2009 | -1.00 / -3.36% | 30.20 | 30.50 | 28.80 | 28.80 | 29.74 | 21.06 | 163,500 |   |  
            | 9/3/2009 | 0.00 / 0.00% | 30.50 | 31.00 | 29.60 | 29.80 | 30.31 | 21.79 | 139,000 |   |  			
            | 9/1/2009 | -1.90 / -5.67% | 31.10 | 32.50 | 31.00 | 31.60 | 31.44 | 23.10 | 188,600 |   |  
            | 8/31/2009 | 0.00 / 0.00% | 34.50 | 34.50 | 32.00 | 33.50 | 33.21 | 24.49 | 273,700 |   |  			
            | 8/28/2009 | +2.10 / +6.95% | 32.30 | 32.30 | 32.00 | 32.30 | 32.28 | 23.62 | 133,400 |   |  
            | 8/27/2009 | +1.30 / +4.50% | 30.20 | 30.20 | 29.30 | 30.20 | 30.15 | 22.08 | 256,900 |   |  			
            | 8/26/2009 | +1.70 / +6.25% | 27.00 | 28.90 | 27.00 | 28.90 | 28.25 | 21.13 | 180,900 |   |  
            | 8/25/2009 | -0.10 / -0.37% | 27.50 | 27.50 | 26.00 | 27.20 | 27.08 | 19.89 | 248,100 |   |  			
            | 8/24/2009 | 0.00 / 0.00% | 28.00 | 28.00 | 26.30 | 27.30 | 27.72 | 19.96 | 298,100 |   |  
            | 8/21/2009 | +1.70 / +6.94% | 26.20 | 26.20 | 26.20 | 26.20 | 26.20 | 19.16 | 130,600 |   |  			
            | 8/20/2009 | +1.20 / +5.15% | 24.50 | 24.50 | 24.00 | 24.50 | 24.50 | 17.91 | 301,800 |   |  
            | 8/19/2009 | +1.40 / +6.39% | 22.00 | 23.30 | 21.90 | 23.30 | 22.95 | 17.04 | 103,900 |   |  			
            | 8/18/2009 | -0.30 / -1.35% | 20.40 | 22.00 | 20.40 | 21.90 | 21.79 | 16.01 | 42,300 |   |  
            | 8/17/2009 | 0.00 / 0.00% | 21.90 | 22.20 | 21.70 | 22.20 | 21.89 | 16.23 | 53,800 |   |  			
            | 8/14/2009 | -0.10 / -0.45% | 22.20 | 22.20 | 21.90 | 21.90 | 21.97 | 16.01 | 15,000 |   |  
            | 8/13/2009 | -0.10 / -0.45% | 22.80 | 22.80 | 22.00 | 22.00 | 22.20 | 16.08 | 36,600 |   |  |