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                    Closing price on 6/18/2009
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                    | Open | 21.80 |  
                    | High | 21.80 |  
                    | Low | 21.50 |  
                    | Volume | 90,300 |  
                    | Split-adjusted Price | 15.94 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/18/2009 | -0.20 / -0.91% | 21.80 | 21.80 | 21.50 | 21.80 | 21.77 | 15.94 | 90,300 |   |  
            | 6/17/2009 | +0.50 / +2.33% | 20.00 | 22.60 | 20.00 | 22.00 | 20.38 | 16.08 | 197,200 |   |  			
            | 6/16/2009 | -1.50 / -6.52% | 21.50 | 22.00 | 21.50 | 21.50 | 21.50 | 15.72 | 40,400 |   |  
            | 6/15/2009 | 0.00 / 0.00% | 24.60 | 24.60 | 22.90 | 23.00 | 23.07 | 16.82 | 103,000 |   |  			
            | 6/12/2009 | -0.10 / -0.41% | 26.00 | 26.10 | 23.70 | 24.40 | 24.59 | 17.84 | 93,300 |   |  
            | 6/11/2009 | +0.50 / +2.08% | 23.00 | 24.90 | 23.00 | 24.50 | 24.41 | 17.91 | 125,900 |   |  			
            | 6/10/2009 | -1.70 / -6.61% | 27.20 | 27.40 | 24.00 | 24.00 | 24.29 | 17.55 | 220,000 |   |  
            | 6/9/2009 | +1.60 / +6.64% | 25.70 | 25.70 | 24.90 | 25.70 | 25.66 | 18.79 | 314,200 |   |  			
            | 6/8/2009 | 0.00 / 0.00% | 24.10 | 24.10 | 24.10 | 24.10 | 24.10 | 17.62 | 41,000 |   |  
            | 6/5/2009 | +1.60 / +7.62% | 22.60 | 22.60 | 22.60 | 22.60 | 22.60 | 16.52 | 65,500 |   |  			
            | 6/4/2009 | +0.60 / +2.94% | 20.10 | 21.60 | 20.10 | 21.00 | 21.21 | 15.35 | 117,700 |   |  
            | 6/3/2009 | +0.30 / +1.49% | 21.20 | 21.20 | 19.90 | 20.40 | 20.22 | 14.92 | 45,200 |   |  			
            | 6/2/2009 | +0.10 / +0.50% | 21.00 | 21.00 | 19.70 | 20.10 | 20.54 | 14.70 | 80,900 |   |  
            | 6/1/2009 | 0.00 / 0.00% | 18.50 | 20.00 | 18.50 | 20.00 | 19.73 | 14.62 | 36,200 |   |  			
            | 5/29/2009 | +0.30 / +1.64% | 18.30 | 19.50 | 18.30 | 18.60 | 18.67 | 13.60 | 41,500 |   |  
            | 5/28/2009 | -1.10 / -5.67% | 19.00 | 19.00 | 18.30 | 18.30 | 18.41 | 13.38 | 52,300 |   |  			
            | 5/27/2009 | -0.50 / -2.51% | 20.00 | 20.30 | 19.20 | 19.40 | 19.58 | 14.18 | 58,100 |   |  
            | 5/26/2009 | -0.90 / -4.33% | 21.00 | 21.30 | 19.50 | 19.90 | 20.34 | 14.55 | 97,900 |   |  			
            | 5/25/2009 | 0.00 / 0.00% | 19.00 | 20.80 | 19.00 | 20.80 | 20.34 | 15.21 | 103,500 |   |  
            | 5/22/2009 | -0.70 / -3.40% | 20.40 | 20.40 | 19.00 | 19.90 | 19.53 | 14.55 | 111,900 |   |  			
            | 5/21/2009 | +0.90 / +4.57% | 20.60 | 20.60 | 19.30 | 20.60 | 20.36 | 15.06 | 130,900 |   |  
            | 5/20/2009 | +1.20 / +6.49% | 18.60 | 19.70 | 18.00 | 19.70 | 19.35 | 14.40 | 335,700 |   |  			
            | 5/19/2009 | +1.00 / +5.71% | 18.70 | 18.80 | 18.20 | 18.50 | 18.47 | 13.53 | 68,700 |   |  
            | 5/18/2009 | 0.00 / 0.00% | 19.00 | 19.20 | 17.50 | 17.50 | 17.95 | 12.79 | 24,200 |   |  			
            | 5/15/2009 | +0.70 / +4.02% | 17.20 | 18.10 | 17.20 | 18.10 | 17.97 | 13.23 | 46,200 |   |  
            | 5/14/2009 | -0.50 / -2.79% | 16.90 | 17.40 | 16.90 | 17.40 | 17.02 | 12.72 | 80,800 |   |  			
            | 5/13/2009 | -0.80 / -4.28% | 19.00 | 19.00 | 17.70 | 17.90 | 18.10 | 13.09 | 35,000 |   |  
            | 5/12/2009 | +0.50 / +2.75% | 17.50 | 18.80 | 17.50 | 18.70 | 18.37 | 13.67 | 47,900 |   |  			
            | 5/11/2009 | 0.00 / 0.00% | 19.50 | 19.60 | 18.00 | 18.20 | 18.45 | 13.31 | 80,400 |   |  
            | 5/8/2009 | -0.20 / -1.08% | 18.00 | 19.00 | 18.00 | 18.30 | 18.63 | 13.38 | 159,300 |   |  |