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                    Closing price on 6/16/2008
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        |           
                
                    | Open | 14.80 |  
                    | High | 15.60 |  
                    | Low | 14.80 |  
                    | Volume | 83,600 |  
                    | Split-adjusted Price | 11.41 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 5/16/2008 | -0.50 / -2.99% | 17.20 | 17.20 | 16.20 | 16.20 | 16.71 | 11.84 | 37,300 |   |  			
            | 5/15/2008 | -0.50 / -2.91% | 16.70 | 16.70 | 16.70 | 16.70 | 16.70 | 12.21 | 12,300 |   |  
            | 5/14/2008 | -0.50 / -2.82% | 17.20 | 17.20 | 17.20 | 17.20 | 17.20 | 12.58 | 200 |   |  			
            | 5/13/2008 | +0.20 / +1.14% | 17.70 | 17.70 | 17.70 | 17.70 | 17.70 | 12.94 | 6,700 |   |  
            | 5/12/2008 | 0.00 / 0.00% | 18.50 | 18.50 | 17.50 | 17.50 | 18.18 | 12.79 | 14,700 |   |  			
            | 5/9/2008 | -0.50 / -2.78% | 17.50 | 18.50 | 17.50 | 17.50 | 18.04 | 12.79 | 11,200 |   |  
            | 5/8/2008 | -0.50 / -2.70% | 18.00 | 18.00 | 18.00 | 18.00 | 18.00 | 13.16 | 100 |   |  			
            | 5/7/2008 | -0.50 / -2.63% | 18.50 | 18.50 | 18.50 | 18.50 | 18.50 | 13.53 | 3,600 |   |  
            | 5/6/2008 | -0.40 / -2.06% | 19.40 | 19.40 | 19.00 | 19.00 | 19.03 | 13.89 | 1,200 |   |  |