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                    Closing price on 4/25/2008
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                    | Open | 20.30 |  
                    | High | 20.30 |  
                    | Low | 19.70 |  
                    | Volume | 7,000 |  
                    | Split-adjusted Price | 14.40 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/25/2008 | -0.60 / -2.96% | 20.30 | 20.30 | 19.70 | 19.70 | 19.96 | 14.40 | 7,000 |   |  
            | 4/24/2008 | -0.60 / -2.87% | 20.30 | 20.30 | 20.30 | 20.30 | 20.30 | 14.84 | 12,900 |   |  			
            | 4/23/2008 | -0.60 / -2.79% | 20.90 | 20.90 | 20.90 | 20.90 | 20.90 | 15.28 | 2,600 |   |  
            | 4/22/2008 | -0.60 / -2.71% | 21.50 | 21.50 | 21.50 | 21.50 | 21.50 | 15.72 | 6,500 |   |  			
            | 4/21/2008 | 0.00 / 0.00% | 22.20 | 22.20 | 22.10 | 22.10 | 22.10 | 16.16 | 2,500 |   |  
            | 4/18/2008 | -1.20 / -5.17% | 23.10 | 23.10 | 22.00 | 22.00 | 22.68 | 16.08 | 22,800 |   |  			
            | 4/17/2008 | +0.50 / +2.20% | 22.10 | 23.20 | 22.10 | 23.20 | 22.59 | 16.96 | 48,800 |   |  
            | 4/16/2008 | 0.00 / 0.00% | 22.70 | 22.70 | 22.70 | 22.70 | 22.70 | 16.60 | 1,600 |   |  			
            | 4/11/2008 | -0.70 / -2.92% | 23.30 | 23.30 | 23.30 | 23.30 | 23.30 | 17.04 | 32,100 |   |  
            | 4/10/2008 | -0.70 / -2.83% | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 17.55 | 6,800 |   |  			
            | 4/9/2008 | -0.70 / -2.76% | 25.40 | 25.40 | 24.70 | 24.70 | 24.70 | 18.06 | 32,600 |   |  
            | 4/8/2008 | +0.30 / +1.20% | 25.80 | 25.80 | 24.60 | 25.40 | 25.35 | 18.57 | 45,800 |   |  			
            | 4/7/2008 | 0.00 / 0.00% | 25.10 | 25.10 | 25.10 | 25.10 | 25.10 | 18.35 | 26,800 |   |  
            | 4/4/2008 | +0.40 / +1.67% | 24.40 | 24.40 | 24.40 | 24.40 | 24.40 | 17.84 | 14,400 |   |  			
            | 4/3/2008 | +0.40 / +1.69% | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 17.55 | 6,800 |   |  
            | 4/2/2008 | +0.40 / +1.72% | 23.60 | 23.60 | 23.60 | 23.60 | 23.60 | 17.25 | 12,900 |   |  			
            | 4/1/2008 | +0.40 / +1.75% | 23.20 | 23.20 | 23.20 | 23.20 | 23.20 | 16.96 | 12,600 |   |  
            | 3/31/2008 | 0.00 / 0.00% | 22.80 | 22.80 | 22.80 | 22.80 | 22.80 | 16.67 | 2,100 |   |  			
            | 3/28/2008 | +0.40 / +1.82% | 22.40 | 22.40 | 22.40 | 22.40 | 22.40 | 16.38 | 18,900 |   |  
            | 3/27/2008 | +0.10 / +0.46% | 21.90 | 22.00 | 21.90 | 22.00 | 21.95 | 16.08 | 4,300 |   |  			
            | 3/26/2008 | +1.90 / +9.50% | 20.00 | 22.20 | 20.00 | 21.90 | 21.65 | 16.01 | 23,900 |   |  
            | 3/25/2008 | -3.00 / -13.04% | 20.10 | 23.30 | 20.00 | 20.00 | 21.21 | 14.62 | 23,700 |   |  			
            | 3/24/2008 | 0.00 / 0.00% | 23.50 | 23.50 | 21.90 | 23.00 | 22.17 | 16.82 | 8,500 |   |  
            | 3/21/2008 | -2.10 / -8.08% | 25.00 | 25.50 | 23.80 | 23.90 | 24.31 | 17.47 | 9,000 |   |  			
            | 3/20/2008 | 0.00 / 0.00% | 26.50 | 26.50 | 25.80 | 26.00 | 26.45 | 19.01 | 2,300 |   |  
            | 3/19/2008 | +0.20 / +0.78% | 26.70 | 27.50 | 23.90 | 26.00 | 25.73 | 19.01 | 15,000 |   |  			
            | 3/18/2008 | -1.70 / -6.18% | 25.80 | 29.00 | 25.80 | 25.80 | 26.54 | 18.86 | 41,700 |   |  
            | 3/17/2008 | 0.00 / 0.00% | 31.50 | 31.50 | 27.30 | 27.50 | 28.58 | 20.11 | 29,500 |   |  			
            | 3/14/2008 | +0.80 / +2.67% | 32.00 | 32.00 | 29.00 | 30.80 | 30.30 | 22.52 | 9,900 |   |  
            | 3/13/2008 | -0.90 / -2.91% | 32.00 | 32.00 | 30.00 | 30.00 | 30.25 | 21.93 | 18,700 |   |  |