| 
                 
                    Closing price on 1/21/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    36.00 | 
                 
                
                    | High | 
                    38.00 | 
                 
                
                    | Low | 
                    35.80 | 
                     
                
                    | Volume | 
                    3,500 | 
                                 
                
                    | Split-adjusted Price | 
                    26.17 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
XMC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/21/2008
             | 
            
                0.00 / 0.00%
             |             
            
                36.00
             |           
            
                38.00
             |               
            
                35.80
             |                           
            
                35.80
             | 
            
                36.23
             |                     
            
                26.17
             |                                 
            
                3,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2008
             | 
            
                -0.30 / -0.80%
             |             
            
                38.80
             |           
            
                39.50
             |               
            
                36.00
             |                           
            
                37.20
             | 
            
                38.11
             |                     
            
                27.20
             |                                 
            
                13,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2008
             | 
            
                +0.10 / +0.27%
             |             
            
                39.00
             |           
            
                40.00
             |               
            
                34.00
             |                           
            
                37.50
             | 
            
                38.18
             |                     
            
                27.42
             |                                 
            
                34,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2008
             | 
            
                +3.50 / +10.32%
             |             
            
                34.00
             |           
            
                37.40
             |               
            
                34.00
             |                           
            
                37.40
             | 
            
                36.57
             |                     
            
                27.34
             |                                 
            
                20,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2008
             | 
            
                -1.80 / -5.04%
             |             
            
                33.80
             |           
            
                35.00
             |               
            
                33.80
             |                           
            
                33.90
             | 
            
                33.96
             |                     
            
                24.79
             |                                 
            
                15,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2008
             | 
            
                0.00 / 0.00%
             |             
            
                40.00
             |           
            
                40.50
             |               
            
                35.70
             |                           
            
                35.70
             | 
            
                37.49
             |                     
            
                26.10
             |                                 
            
                6,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2008
             | 
            
                -1.60 / -3.90%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                38.80
             |                           
            
                39.40
             | 
            
                39.60
             |                     
            
                28.81
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2008
             | 
            
                -1.00 / -2.38%
             |             
            
                44.00
             |           
            
                44.50
             |               
            
                39.30
             |                           
            
                41.00
             | 
            
                40.83
             |                     
            
                29.98
             |                                 
            
                10,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2008
             | 
            
                -2.30 / -5.19%
             |             
            
                43.00
             |           
            
                45.00
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                43.59
             |                     
            
                30.71
             |                                 
            
                20,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2008
             | 
            
                -0.10 / -0.23%
             |             
            
                48.00
             |           
            
                51.00
             |               
            
                44.00
             |                           
            
                44.30
             | 
            
                45.42
             |                     
            
                32.39
             |                                 
            
                23,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2008
             | 
            
                0.00 / 0.00%
             |             
            
                52.00
             |           
            
                52.00
             |               
            
                44.40
             |                           
            
                44.40
             | 
            
                47.55
             |                     
            
                32.46
             |                                 
            
                9,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2008
             | 
            
                -0.90 / -1.88%
             |             
            
                50.90
             |           
            
                52.00
             |               
            
                47.00
             |                           
            
                47.00
             | 
            
                49.33
             |                     
            
                34.36
             |                                 
            
                9,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2008
             | 
            
                -0.10 / -0.21%
             |             
            
                48.00
             |           
            
                50.30
             |               
            
                47.00
             |                           
            
                47.90
             | 
            
                48.72
             |                     
            
                35.02
             |                                 
            
                13,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/2/2008
             | 
            
                0.00 / 0.00%
             |             
            
                54.50
             |           
            
                54.90
             |               
            
                48.00
             |                           
            
                48.00
             | 
            
                50.49
             |                     
            
                35.09
             |                                 
            
                23,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2007
             | 
            
                -3.40 / -6.37%
             |             
            
                52.00
             |           
            
                52.00
             |               
            
                49.00
             |                           
            
                50.00
             | 
            
                50.00
             |                     
            
                36.56
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2007
             | 
            
                -0.10 / -0.19%
             |             
            
                55.40
             |           
            
                55.40
             |               
            
                53.40
             |                           
            
                53.40
             | 
            
                54.24
             |                     
            
                39.04
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2007
             | 
            
                +2.50 / +4.90%
             |             
            
                53.00
             |           
            
                54.00
             |               
            
                53.00
             |                           
            
                53.50
             | 
            
                53.52
             |                     
            
                39.12
             |                                 
            
                19,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2007
             | 
            
                -3.00 / -5.56%
             |             
            
                53.00
             |           
            
                53.00
             |               
            
                51.00
             |                           
            
                51.00
             | 
            
                52.22
             |                     
            
                37.29
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2007
             | 
            
                0.00 / 0.00%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                53.50
             |                           
            
                54.00
             | 
            
                54.01
             |                     
            
                39.48
             |                                 
            
                5,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2007
             | 
            
                -1.90 / -3.45%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                53.10
             |                           
            
                53.10
             | 
            
                54.97
             |                     
            
                38.82
             |                                 
            
                24,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2007
             | 
            
                0.00 / 0.00%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                53.10
             |                           
            
                55.00
             | 
            
                58.40
             |                     
            
                40.21
             |                                 
            
                20,700
             |            
            
                 
             |                                       
         
    
         
    
    
 |