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                    Closing price on 6/27/2008
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        |           
                
                    | Open | 13.90 |  
                    | High | 13.90 |  
                    | Low | 13.20 |  
                    | Volume | 35,300 |  
                    | Split-adjusted Price | 9.80 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/27/2008 | 0.00 / 0.00% | 13.90 | 13.90 | 13.20 | 13.40 | 13.58 | 9.80 | 35,300 |   |  
            | 6/26/2008 | -0.20 / -1.47% | 13.70 | 14.20 | 13.20 | 13.40 | 13.71 | 9.80 | 48,200 |   |  			
            | 6/25/2008 | -0.50 / -3.55% | 13.60 | 14.10 | 13.60 | 13.60 | 13.67 | 9.94 | 55,200 |   |  
            | 6/24/2008 | -0.20 / -1.40% | 14.10 | 14.10 | 14.10 | 14.10 | 14.10 | 10.31 | 4,800 |   |  			
            | 6/23/2008 | 0.00 / 0.00% | 14.30 | 15.30 | 14.30 | 14.30 | 14.63 | 10.46 | 43,600 |   |  
            | 6/20/2008 | -0.60 / -3.90% | 14.80 | 14.80 | 14.80 | 14.80 | 14.80 | 10.82 | 12,600 |   |  			
            | 6/19/2008 | 0.00 / 0.00% | 15.40 | 15.40 | 15.40 | 15.40 | 15.40 | 11.26 | 1,300 |   |  
            | 6/18/2008 | -0.40 / -2.53% | 16.20 | 16.20 | 15.40 | 15.40 | 15.98 | 11.26 | 35,000 |   |  			
            | 6/17/2008 | +0.20 / +1.28% | 15.80 | 15.80 | 15.80 | 15.80 | 15.80 | 11.55 | 87,700 |   |  
            | 6/16/2008 | 0.00 / 0.00% | 14.80 | 15.60 | 14.80 | 15.60 | 15.40 | 11.41 | 83,600 |   |  			
            | 6/13/2008 | +0.20 / +1.33% | 15.60 | 15.60 | 14.80 | 15.20 | 15.15 | 11.11 | 46,000 |   |  
            | 6/12/2008 | -0.20 / -1.32% | 15.80 | 15.80 | 15.00 | 15.00 | 15.21 | 10.97 | 45,600 |   |  			
            | 6/11/2008 | -0.40 / -2.56% | 16.00 | 16.00 | 15.20 | 15.20 | 15.35 | 11.11 | 87,600 |   |  
            | 6/10/2008 | +0.50 / +3.31% | 16.10 | 16.10 | 15.30 | 15.60 | 15.64 | 11.41 | 27,500 |   |  			
            | 6/9/2008 | 0.00 / 0.00% | 15.90 | 15.90 | 15.10 | 15.10 | 15.66 | 11.04 | 26,500 |   |  
            | 6/6/2008 | 0.00 / 0.00% | 15.90 | 15.90 | 15.10 | 15.10 | 15.50 | 11.04 | 20,100 |   |  			
            | 6/5/2008 | +0.10 / +0.67% | 15.90 | 15.90 | 15.10 | 15.10 | 15.49 | 11.04 | 20,700 |   |  
            | 6/4/2008 | -0.30 / -1.96% | 15.40 | 15.80 | 15.00 | 15.00 | 15.48 | 10.97 | 27,700 |   |  			
            | 6/3/2008 | -0.40 / -2.55% | 16.10 | 16.10 | 15.30 | 15.30 | 15.36 | 11.19 | 3,500 |   |  
            | 6/2/2008 | 0.00 / 0.00% | 15.70 | 15.70 | 15.70 | 15.70 | 15.70 | 11.48 | 200 |   |  			
            | 5/30/2008 | -0.20 / -1.25% | 16.60 | 16.60 | 15.80 | 15.80 | 16.07 | 11.55 | 21,000 |   |  
            | 5/29/2008 | +0.40 / +2.56% | 16.30 | 16.30 | 15.90 | 16.00 | 16.21 | 11.70 | 39,300 |   |  			
            | 5/28/2008 | -0.20 / -1.27% | 16.40 | 16.40 | 15.60 | 15.60 | 15.89 | 11.41 | 18,000 |   |  
            | 5/27/2008 | -0.40 / -2.47% | 16.60 | 16.60 | 15.80 | 15.80 | 16.04 | 11.55 | 16,900 |   |  			
            | 5/26/2008 | 0.00 / 0.00% | 16.20 | 16.20 | 16.20 | 16.20 | 16.20 | 11.84 | 1,800 |   |  
            | 5/23/2008 | -0.10 / -0.61% | 17.20 | 17.30 | 16.30 | 16.30 | 16.68 | 11.92 | 28,400 |   |  			
            | 5/22/2008 | 0.00 / 0.00% | 16.40 | 17.40 | 16.40 | 16.40 | 16.84 | 11.99 | 21,800 |   |  
            | 5/21/2008 | -0.10 / -0.61% | 17.40 | 17.40 | 16.40 | 16.40 | 16.91 | 11.99 | 21,600 |   |  			
            | 5/20/2008 | +0.30 / +1.85% | 17.50 | 17.50 | 16.50 | 16.50 | 16.87 | 12.06 | 6,800 |   |  
            | 5/19/2008 | 0.00 / 0.00% | 16.20 | 17.20 | 16.20 | 16.20 | 16.98 | 11.84 | 11,800 |   |  |