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                    Closing price on 9/4/2012
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                    | Open | 5.60 |  
                    | High | 6.10 |  
                    | Low | 5.60 |  
                    | Volume | 2,100 |  
                    | Split-adjusted Price | 4.46 |  
                
             | 
 |  XMC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/4/2012 | 0.00 / 0.00% | 5.60 | 6.10 | 5.60 | 6.10 | 5.72 | 4.46 | 2,100 |   |  
            | 8/31/2012 | +0.10 / +1.69% | 5.90 | 6.00 | 5.90 | 6.00 | 5.90 | 4.39 | 7,400 |   |  			
            | 8/30/2012 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 4.31 | 900 |   |  
            | 8/29/2012 | +0.30 / +5.36% | 5.80 | 5.90 | 5.60 | 5.90 | 5.78 | 4.31 | 7,900 |   |  			
            | 8/28/2012 | +0.10 / +1.82% | 5.60 | 5.60 | 5.50 | 5.60 | 5.59 | 4.09 | 3,700 |   |  
            | 8/27/2012 | 0.00 / 0.00% | 5.60 | 5.60 | 5.50 | 5.50 | 5.54 | 4.02 | 8,400 |   |  			
            | 8/24/2012 | +0.10 / +1.72% | 6.00 | 6.20 | 5.80 | 5.90 | 6.13 | 4.31 | 12,400 |   |  
            | 8/23/2012 | -0.30 / -4.92% | 5.90 | 5.90 | 5.80 | 5.80 | 5.81 | 4.24 | 20,800 |   |  			
            | 8/22/2012 | -0.40 / -6.15% | 6.20 | 6.90 | 6.10 | 6.10 | 6.17 | 4.46 | 17,300 |   |  
            | 8/21/2012 | -0.30 / -4.41% | 6.70 | 6.70 | 6.50 | 6.50 | 6.52 | 4.75 | 21,400 |   |  			
            | 8/20/2012 | 0.00 / 0.00% | 6.80 | 7.00 | 6.80 | 6.80 | 6.84 | 4.97 | 16,400 |   |  
            | 8/17/2012 | +0.10 / +1.49% | 6.70 | 7.00 | 6.70 | 6.80 | 6.73 | 4.97 | 10,200 |   |  			
            | 8/16/2012 | -0.50 / -6.94% | 6.80 | 6.80 | 6.70 | 6.70 | 6.73 | 4.90 | 13,000 |   |  
            | 8/15/2012 | -0.20 / -2.70% | 7.10 | 7.20 | 7.00 | 7.20 | 7.07 | 5.26 | 6,100 |   |  			
            | 8/14/2012 | 0.00 / 0.00% | 7.40 | 7.40 | 7.40 | 7.40 | 7.40 | 5.41 | 100 |   |  
            | 8/13/2012 | 0.00 / 0.00% | 7.10 | 7.40 | 7.10 | 7.40 | 7.13 | 5.41 | 1,100 |   |  			
            | 8/10/2012 | 0.00 / 0.00% | 7.00 | 7.10 | 7.00 | 7.10 | 7.08 | 5.19 | 2,400 |   |  
            | 8/9/2012 | 0.00 / 0.00% | 7.00 | 7.10 | 7.00 | 7.10 | 7.09 | 5.19 | 4,600 |   |  			
            | 8/8/2012 | 0.00 / 0.00% | 7.00 | 7.10 | 7.00 | 7.10 | 7.02 | 5.19 | 15,000 |   |  
            | 8/7/2012 | 0.00 / 0.00% | 7.00 | 7.10 | 6.80 | 7.10 | 6.98 | 5.19 | 2,400 |   |  			
            | 8/6/2012 | 0.00 / 0.00% | 7.00 | 7.10 | 7.00 | 7.10 | 7.00 | 5.19 | 2,700 |   |  
            | 8/3/2012 | +0.30 / +4.48% | 6.70 | 7.00 | 6.70 | 7.00 | 6.72 | 5.12 | 5,500 |   |  			
            | 8/2/2012 | 0.00 / 0.00% | 6.60 | 6.70 | 6.30 | 6.70 | 6.52 | 4.90 | 14,400 |   |  
            | 8/1/2012 | -0.30 / -4.29% | 6.70 | 6.70 | 6.60 | 6.70 | 6.62 | 4.90 | 1,200 |   |  			
            | 7/31/2012 | +0.10 / +1.45% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.12 | 100 |   |  
            | 7/30/2012 | 0.00 / 0.00% | 6.90 | 6.90 | 6.90 | 6.90 | 6.90 | 5.04 | 100 |   |  			
            | 7/27/2012 | -0.10 / -1.47% | 6.60 | 6.70 | 6.60 | 6.70 | 6.68 | 4.90 | 2,400 |   |  
            | 7/26/2012 | +0.20 / +3.03% | 6.80 | 6.90 | 6.60 | 6.80 | 6.74 | 4.97 | 500 |   |  			
            | 7/25/2012 | -0.30 / -4.35% | 6.80 | 6.80 | 6.50 | 6.60 | 6.61 | 4.83 | 2,700 |   |  
            | 7/24/2012 | 0.00 / 0.00% | 6.90 | 6.90 | 6.90 | 6.90 | 6.90 | 5.04 | 100 |   |  |