| 
                 
                    Closing price on 8/7/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.70 | 
                 
                
                    | High | 
                    13.80 | 
                 
                
                    | Low | 
                    13.20 | 
                     
                
                    | Volume | 
                    31,300 | 
                                 
                
                    | Split-adjusted Price | 
                    9.87 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
XMC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/7/2008
             | 
            
                -0.10 / -0.74%
             |             
            
                13.70
             |           
            
                13.80
             |               
            
                13.20
             |                           
            
                13.50
             | 
            
                13.72
             |                     
            
                9.87
             |                                 
            
                31,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2008
             | 
            
                +0.60 / +4.62%
             |             
            
                13.40
             |           
            
                13.60
             |               
            
                12.60
             |                           
            
                13.60
             | 
            
                13.34
             |                     
            
                9.94
             |                                 
            
                42,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2008
             | 
            
                -0.30 / -2.26%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.10
             |                     
            
                9.50
             |                                 
            
                27,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2008
             | 
            
                0.00 / 0.00%
             |             
            
                13.70
             |           
            
                13.90
             |               
            
                13.20
             |                           
            
                13.30
             | 
            
                13.53
             |                     
            
                9.72
             |                                 
            
                22,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2008
             | 
            
                -0.40 / -2.88%
             |             
            
                13.90
             |           
            
                14.00
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.67
             |                     
            
                9.87
             |                                 
            
                34,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2008
             | 
            
                +0.50 / +3.73%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                13.20
             |                           
            
                13.90
             | 
            
                13.54
             |                     
            
                10.16
             |                                 
            
                38,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2008
             | 
            
                -0.10 / -0.74%
             |             
            
                14.00
             |           
            
                14.10
             |               
            
                13.20
             |                           
            
                13.40
             | 
            
                13.68
             |                     
            
                9.80
             |                                 
            
                29,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2008
             | 
            
                +0.30 / +2.27%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.00
             |                           
            
                13.50
             | 
            
                13.71
             |                     
            
                9.87
             |                                 
            
                59,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2008
             | 
            
                0.00 / 0.00%
             |             
            
                12.90
             |           
            
                13.90
             |               
            
                12.90
             |                           
            
                13.20
             | 
            
                13.43
             |                     
            
                9.65
             |                                 
            
                63,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2008
             | 
            
                -0.40 / -2.90%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                9.80
             |                                 
            
                5,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2008
             | 
            
                -0.50 / -3.50%
             |             
            
                13.80
             |           
            
                14.80
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.94
             |                     
            
                10.09
             |                                 
            
                77,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2008
             | 
            
                -0.50 / -3.38%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                10.46
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2008
             | 
            
                -0.60 / -3.90%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                10.82
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2008
             | 
            
                0.00 / 0.00%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                15.40
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                11.26
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2008
             | 
            
                -0.40 / -2.44%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                11.70
             |                                 
            
                9,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2008
             | 
            
                -0.60 / -3.53%
             |             
            
                16.50
             |           
            
                17.10
             |               
            
                16.10
             |                           
            
                16.40
             | 
            
                16.56
             |                     
            
                11.99
             |                                 
            
                60,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2008
             | 
            
                +0.50 / +3.03%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                15.90
             |                           
            
                17.00
             | 
            
                16.53
             |                     
            
                12.43
             |                                 
            
                83,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2008
             | 
            
                +0.50 / +3.13%
             |             
            
                16.50
             |           
            
                16.50
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                12.06
             |                                 
            
                25,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2008
             | 
            
                0.00 / 0.00%
             |             
            
                15.80
             |           
            
                16.00
             |               
            
                15.50
             |                           
            
                16.00
             | 
            
                15.92
             |                     
            
                11.70
             |                                 
            
                53,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2008
             | 
            
                +0.30 / +1.99%
             |             
            
                15.40
             |           
            
                15.80
             |               
            
                15.10
             |                           
            
                15.40
             | 
            
                15.38
             |                     
            
                11.26
             |                                 
            
                64,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2008
             | 
            
                -0.50 / -3.21%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.71
             |                     
            
                11.04
             |                                 
            
                37,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2008
             | 
            
                -0.30 / -1.89%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                15.50
             |                           
            
                15.60
             | 
            
                15.73
             |                     
            
                11.41
             |                                 
            
                33,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2008
             | 
            
                +0.60 / +3.92%
             |             
            
                15.60
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                15.90
             | 
            
                15.62
             |                     
            
                11.63
             |                                 
            
                28,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2008
             | 
            
                0.00 / 0.00%
             |             
            
                16.40
             |           
            
                16.50
             |               
            
                15.30
             |                           
            
                15.30
             | 
            
                16.23
             |                     
            
                11.19
             |                                 
            
                94,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2008
             | 
            
                +0.60 / +3.92%
             |             
            
                15.80
             |           
            
                15.90
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                15.89
             |                     
            
                11.63
             |                                 
            
                43,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2008
             | 
            
                +0.40 / +2.68%
             |             
            
                15.30
             |           
            
                15.30
             |               
            
                15.20
             |                           
            
                15.30
             | 
            
                15.29
             |                     
            
                11.19
             |                                 
            
                23,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2008
             | 
            
                +0.50 / +3.47%
             |             
            
                14.90
             |           
            
                14.90
             |               
            
                14.60
             |                           
            
                14.90
             | 
            
                14.84
             |                     
            
                10.89
             |                                 
            
                45,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2008
             | 
            
                +0.40 / +2.86%
             |             
            
                14.20
             |           
            
                14.40
             |               
            
                14.20
             |                           
            
                14.40
             | 
            
                14.37
             |                     
            
                10.53
             |                                 
            
                54,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2008
             | 
            
                0.00 / 0.00%
             |             
            
                13.80
             |           
            
                14.00
             |               
            
                13.70
             |                           
            
                14.00
             | 
            
                13.92
             |                     
            
                10.24
             |                                 
            
                24,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2008
             | 
            
                0.00 / 0.00%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.20
             |                           
            
                13.40
             | 
            
                13.58
             |                     
            
                9.80
             |                                 
            
                35,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |