| 
                 
                    Closing price on 12/26/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    53.00 | 
                 
                
                    | High | 
                    54.00 | 
                 
                
                    | Low | 
                    53.00 | 
                     
                
                    | Volume | 
                    19,800 | 
                                 
                
                    | Split-adjusted Price | 
                    39.12 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
XMC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
         
    
    
 |