| 
                 
                    Closing price on 6/29/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    21.00 | 
                 
                
                    | High | 
                    21.50 | 
                 
                
                    | Low | 
                    21.00 | 
                     
                
                    | Volume | 
                    21,500 | 
                                 
                
                    | Split-adjusted Price | 
                    15.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
XMC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/29/2009
             | 
            
                0.00 / 0.00%
             |             
            
                21.00
             |           
            
                21.50
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.29
             |                     
            
                15.35
             |                                 
            
                21,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2009
             | 
            
                +0.20 / +0.93%
             |             
            
                22.00
             |           
            
                22.40
             |               
            
                21.20
             |                           
            
                21.80
             | 
            
                21.63
             |                     
            
                15.94
             |                                 
            
                28,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2009
             | 
            
                +0.20 / +0.93%
             |             
            
                22.60
             |           
            
                22.80
             |               
            
                21.40
             |                           
            
                21.60
             | 
            
                22.35
             |                     
            
                15.79
             |                                 
            
                92,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2009
             | 
            
                +1.50 / +7.54%
             |             
            
                20.00
             |           
            
                21.40
             |               
            
                20.00
             |                           
            
                21.40
             | 
            
                21.36
             |                     
            
                15.65
             |                                 
            
                62,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2009
             | 
            
                -1.20 / -5.69%
             |             
            
                19.90
             |           
            
                20.50
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.96
             |                     
            
                14.55
             |                                 
            
                88,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2009
             | 
            
                0.00 / 0.00%
             |             
            
                22.00
             |           
            
                22.10
             |               
            
                21.10
             |                           
            
                21.10
             | 
            
                21.29
             |                     
            
                15.43
             |                                 
            
                37,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2009
             | 
            
                +0.40 / +1.83%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                21.80
             |                           
            
                22.20
             | 
            
                22.58
             |                     
            
                16.23
             |                                 
            
                56,600
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |