| 
                 
                    Closing price on 6/9/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    22.50 | 
                 
                
                    | High | 
                    23.50 | 
                 
                
                    | Low | 
                    22.00 | 
                     
                
                    | Volume | 
                    259,560 | 
                                 
                
                    | Split-adjusted Price | 
                    3.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
MPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/9/2011
             | 
            
                +1.10 / +4.91%
             |             
            
                22.50
             |           
            
                23.50
             |               
            
                22.00
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                3.22
             |                                 
            
                259,560
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2011
             | 
            
                +1.00 / +4.67%
             |             
            
                22.40
             |           
            
                22.40
             |               
            
                21.50
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                3.06
             |                                 
            
                271,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2011
             | 
            
                +1.00 / +4.90%
             |             
            
                21.00
             |           
            
                21.40
             |               
            
                20.60
             |                           
            
                21.40
             | 
            
                21.40
             |                     
            
                2.93
             |                                 
            
                90,920
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                2.79
             |                                 
            
                10,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2011
             | 
            
                +0.90 / +4.62%
             |             
            
                20.40
             |           
            
                20.40
             |               
            
                19.60
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                2.79
             |                                 
            
                18,190
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2011
             | 
            
                +0.90 / +4.84%
             |             
            
                19.40
             |           
            
                19.50
             |               
            
                19.40
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.67
             |                                 
            
                4,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2011
             | 
            
                +0.80 / +4.49%
             |             
            
                18.50
             |           
            
                18.60
             |               
            
                18.10
             |                           
            
                18.60
             | 
            
                18.60
             |                     
            
                2.54
             |                                 
            
                17,110
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2011
             | 
            
                -0.20 / -1.11%
             |             
            
                17.60
             |           
            
                17.80
             |               
            
                17.50
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                2.44
             |                                 
            
                9,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                17.90
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.46
             |                                 
            
                21,320
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2011
             | 
            
                -0.50 / -2.70%
             |             
            
                19.30
             |           
            
                19.30
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.46
             |                                 
            
                7,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2011
             | 
            
                +0.80 / +4.52%
             |             
            
                16.90
             |           
            
                18.50
             |               
            
                16.90
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                2.53
             |                                 
            
                31,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2011
             | 
            
                -0.90 / -4.84%
             |             
            
                17.70
             |           
            
                18.90
             |               
            
                17.70
             |                           
            
                17.70
             | 
            
                17.70
             |                     
            
                2.42
             |                                 
            
                4,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2011
             | 
            
                -0.90 / -4.62%
             |             
            
                19.00
             |           
            
                19.30
             |               
            
                18.60
             |                           
            
                18.60
             | 
            
                18.60
             |                     
            
                2.54
             |                                 
            
                78,360
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2011
             | 
            
                -0.20 / -1.02%
             |             
            
                20.30
             |           
            
                20.60
             |               
            
                19.40
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.67
             |                                 
            
                21,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2011
             | 
            
                -1.00 / -4.83%
             |             
            
                20.00
             |           
            
                20.70
             |               
            
                19.70
             |                           
            
                19.70
             | 
            
                19.70
             |                     
            
                2.70
             |                                 
            
                33,710
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2011
             | 
            
                -0.60 / -2.82%
             |             
            
                21.30
             |           
            
                21.30
             |               
            
                20.70
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                2.83
             |                                 
            
                35,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2011
             | 
            
                -0.20 / -0.93%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.30
             |                           
            
                21.30
             | 
            
                21.30
             |                     
            
                2.91
             |                                 
            
                17,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2011
             | 
            
                -0.70 / -3.15%
             |             
            
                22.20
             |           
            
                22.30
             |               
            
                21.30
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                2.94
             |                                 
            
                96,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2011
             | 
            
                -0.30 / -1.33%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                22.10
             |                           
            
                22.20
             | 
            
                22.20
             |                     
            
                3.04
             |                                 
            
                64,280
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                23.20
             |           
            
                23.20
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.08
             |                                 
            
                30,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2011
             | 
            
                -0.30 / -1.32%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.08
             |                                 
            
                52,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2011
             | 
            
                -0.50 / -2.15%
             |             
            
                23.40
             |           
            
                23.40
             |               
            
                22.60
             |                           
            
                22.80
             | 
            
                22.80
             |                     
            
                3.12
             |                                 
            
                30,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2011
             | 
            
                -0.10 / -0.43%
             |             
            
                22.70
             |           
            
                23.70
             |               
            
                22.50
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                3.19
             |                                 
            
                143,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2011
             | 
            
                +0.50 / +2.18%
             |             
            
                23.30
             |           
            
                23.40
             |               
            
                22.30
             |                           
            
                23.40
             | 
            
                23.40
             |                     
            
                3.20
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2011
             | 
            
                -1.00 / -4.18%
             |             
            
                23.90
             |           
            
                23.90
             |               
            
                22.80
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                3.13
             |                                 
            
                69,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2011
             | 
            
                +0.10 / +0.42%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                22.70
             |                           
            
                23.90
             | 
            
                23.90
             |                     
            
                3.27
             |                                 
            
                153,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                23.30
             |           
            
                23.90
             |               
            
                23.20
             |                           
            
                23.80
             | 
            
                23.80
             |                     
            
                3.26
             |                                 
            
                3,250
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                23.80
             |           
            
                23.80
             |               
            
                23.60
             |                           
            
                23.80
             | 
            
                23.80
             |                     
            
                3.26
             |                                 
            
                2,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2011
             | 
            
                -0.30 / -1.24%
             |             
            
                23.70
             |           
            
                24.40
             |               
            
                23.70
             |                           
            
                23.80
             | 
            
                23.80
             |                     
            
                3.26
             |                                 
            
                4,130
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2011
             | 
            
                +0.10 / +0.42%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                24.00
             |                           
            
                24.10
             | 
            
                24.10
             |                     
            
                3.30
             |                                 
            
                7,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |