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                    Closing price on 3/27/2009
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        |           
                
                    | Open | 12.90 |  
                    | High | 13.30 |  
                    | Low | 12.60 |  
                    | Volume | 113,200 |  
                    | Split-adjusted Price | 9.65 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/27/2009 | +0.70 / +5.60% | 12.90 | 13.30 | 12.60 | 13.20 | 13.15 | 9.65 | 113,200 |   |  
            | 3/26/2009 | 0.00 / 0.00% | 12.50 | 12.80 | 12.40 | 12.50 | 12.47 | 9.14 | 28,100 |   |  			
            | 3/25/2009 | -0.20 / -1.57% | 12.60 | 12.60 | 12.40 | 12.50 | 12.54 | 9.14 | 37,700 |   |  
            | 3/24/2009 | +0.70 / +5.83% | 12.60 | 12.70 | 12.40 | 12.70 | 12.59 | 9.29 | 23,200 |   |  			
            | 3/23/2009 | 0.00 / 0.00% | 12.20 | 12.30 | 12.00 | 12.00 | 12.12 | 8.77 | 33,700 |   |  
            | 3/20/2009 | -0.20 / -1.61% | 12.10 | 12.50 | 12.10 | 12.20 | 12.21 | 8.92 | 12,800 |   |  			
            | 3/19/2009 | -0.30 / -2.36% | 12.90 | 12.90 | 11.90 | 12.40 | 12.19 | 9.07 | 12,500 |   |  
            | 3/18/2009 | +0.60 / +4.96% | 12.70 | 12.70 | 12.50 | 12.70 | 12.69 | 9.29 | 78,300 |   |  			
            | 3/17/2009 | +0.50 / +4.31% | 11.70 | 12.30 | 11.50 | 12.10 | 11.87 | 8.85 | 29,000 |   |  
            | 3/16/2009 | 0.00 / 0.00% | 11.20 | 11.80 | 11.20 | 11.60 | 11.55 | 8.48 | 17,800 |   |  			
            | 3/13/2009 | 0.00 / 0.00% | 11.70 | 11.70 | 11.50 | 11.50 | 11.58 | 8.41 | 8,900 |   |  
            | 3/12/2009 | -0.40 / -3.36% | 11.60 | 11.80 | 11.50 | 11.50 | 11.59 | 8.41 | 12,100 |   |  			
            | 3/11/2009 | +0.40 / +3.48% | 11.80 | 12.10 | 11.80 | 11.90 | 12.03 | 8.70 | 49,100 |   |  
            | 3/10/2009 | +0.10 / +0.88% | 11.00 | 11.60 | 11.00 | 11.50 | 11.43 | 8.41 | 14,400 |   |  			
            | 3/9/2009 | 0.00 / 0.00% | 11.30 | 11.50 | 11.30 | 11.40 | 11.36 | 8.33 | 15,400 |   |  
            | 3/6/2009 | 0.00 / 0.00% | 11.00 | 11.10 | 10.90 | 11.10 | 11.05 | 8.12 | 8,600 |   |  			
            | 3/5/2009 | 0.00 / 0.00% | 11.20 | 11.60 | 11.00 | 11.10 | 11.13 | 8.12 | 8,200 |   |  
            | 3/4/2009 | +0.20 / +1.83% | 10.80 | 11.10 | 10.80 | 11.10 | 10.97 | 8.12 | 13,000 |   |  			
            | 3/3/2009 | 0.00 / 0.00% | 10.90 | 10.90 | 10.80 | 10.90 | 10.83 | 7.97 | 4,000 |   |  
            | 3/2/2009 | 0.00 / 0.00% | 11.00 | 11.00 | 10.80 | 10.90 | 10.89 | 7.97 | 7,000 |   |  			
            | 2/27/2009 | +0.10 / +0.91% | 10.80 | 11.20 | 10.50 | 11.10 | 11.02 | 8.12 | 21,400 |   |  
            | 2/26/2009 | +0.20 / +1.85% | 10.90 | 11.00 | 10.90 | 11.00 | 10.96 | 8.04 | 9,900 |   |  			
            | 2/25/2009 | +0.70 / +6.93% | 10.60 | 10.80 | 10.60 | 10.80 | 10.77 | 7.90 | 7,700 |   |  
            | 2/24/2009 | -0.40 / -3.81% | 10.10 | 10.30 | 10.00 | 10.10 | 10.13 | 7.38 | 26,900 |   |  			
            | 2/23/2009 | 0.00 / 0.00% | 11.20 | 11.20 | 10.50 | 10.50 | 10.74 | 7.68 | 20,100 |   |  
            | 2/20/2009 | -1.90 / -14.39% | 11.50 | 11.50 | 10.90 | 11.30 | 11.23 | 8.26 | 14,600 |   |  			
            | 2/19/2009 | +0.20 / +1.54% | 13.20 | 13.20 | 12.80 | 13.20 | 13.03 | 9.65 | 25,300 |   |  
            | 2/18/2009 | -0.10 / -0.76% | 13.00 | 13.00 | 12.80 | 13.00 | 12.96 | 9.50 | 19,400 |   |  			
            | 2/17/2009 | -0.20 / -1.50% | 13.10 | 13.20 | 12.80 | 13.10 | 13.03 | 9.58 | 47,500 |   |  
            | 2/16/2009 | 0.00 / 0.00% | 13.50 | 13.50 | 13.20 | 13.30 | 13.33 | 9.72 | 38,500 |   |  |