| 
                 
                    Closing price on 6/23/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    32.50 | 
                 
                
                    | High | 
                    32.70 | 
                 
                
                    | Low | 
                    32.10 | 
                     
                
                    | Volume | 
                    224,530 | 
                                 
                
                    | Split-adjusted Price | 
                    4.67 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DPM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/23/2011
             | 
            
                -0.40 / -1.22%
             |             
            
                32.50
             |           
            
                32.70
             |               
            
                32.10
             |                           
            
                32.30
             | 
            
                32.30
             |                     
            
                4.67
             |                                 
            
                224,530
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2011
             | 
            
                -0.10 / -0.30%
             |             
            
                32.80
             |           
            
                33.30
             |               
            
                32.60
             |                           
            
                32.70
             | 
            
                32.70
             |                     
            
                4.73
             |                                 
            
                261,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2011
             | 
            
                +1.50 / +4.79%
             |             
            
                31.40
             |           
            
                32.80
             |               
            
                31.40
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                4.75
             |                                 
            
                119,850
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2011
             | 
            
                -0.70 / -2.19%
             |             
            
                31.50
             |           
            
                32.00
             |               
            
                31.30
             |                           
            
                31.30
             | 
            
                31.30
             |                     
            
                4.53
             |                                 
            
                138,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2011
             | 
            
                -1.40 / -4.19%
             |             
            
                33.40
             |           
            
                33.40
             |               
            
                31.80
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                4.63
             |                                 
            
                990,960
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2011
             | 
            
                +1.40 / +4.38%
             |             
            
                31.80
             |           
            
                33.40
             |               
            
                31.80
             |                           
            
                33.40
             | 
            
                33.40
             |                     
            
                4.83
             |                                 
            
                348,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2011
             | 
            
                -0.90 / -2.74%
             |             
            
                32.50
             |           
            
                32.80
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                4.63
             |                                 
            
                411,680
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2011
             | 
            
                -0.40 / -1.20%
             |             
            
                33.30
             |           
            
                34.00
             |               
            
                32.90
             |                           
            
                32.90
             | 
            
                32.90
             |                     
            
                4.76
             |                                 
            
                333,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2011
             | 
            
                -0.30 / -0.89%
             |             
            
                33.60
             |           
            
                33.60
             |               
            
                33.10
             |                           
            
                33.30
             | 
            
                33.30
             |                     
            
                4.82
             |                                 
            
                234,940
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2011
             | 
            
                -0.30 / -0.88%
             |             
            
                34.00
             |           
            
                34.30
             |               
            
                33.60
             |                           
            
                33.60
             | 
            
                33.60
             |                     
            
                4.86
             |                                 
            
                324,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                33.60
             |           
            
                34.10
             |               
            
                33.00
             |                           
            
                33.90
             | 
            
                33.90
             |                     
            
                4.91
             |                                 
            
                401,030
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2011
             | 
            
                -1.20 / -3.42%
             |             
            
                35.10
             |           
            
                35.10
             |               
            
                33.50
             |                           
            
                33.90
             | 
            
                33.90
             |                     
            
                4.91
             |                                 
            
                431,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2011
             | 
            
                +1.30 / +3.85%
             |             
            
                34.50
             |           
            
                35.20
             |               
            
                34.20
             |                           
            
                35.10
             | 
            
                35.10
             |                     
            
                5.08
             |                                 
            
                325,330
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                32.90
             |           
            
                33.80
             |               
            
                32.20
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                4.89
             |                                 
            
                331,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2011
             | 
            
                -0.60 / -1.74%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                32.70
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                4.89
             |                                 
            
                601,370
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2011
             | 
            
                +1.10 / +3.30%
             |             
            
                33.40
             |           
            
                34.80
             |               
            
                33.40
             |                           
            
                34.40
             | 
            
                34.40
             |                     
            
                4.98
             |                                 
            
                450,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2011
             | 
            
                +1.50 / +4.72%
             |             
            
                31.80
             |           
            
                33.30
             |               
            
                31.00
             |                           
            
                33.30
             | 
            
                33.30
             |                     
            
                4.82
             |                                 
            
                427,440
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2011
             | 
            
                +1.50 / +4.95%
             |             
            
                30.00
             |           
            
                31.80
             |               
            
                30.00
             |                           
            
                31.80
             | 
            
                31.80
             |                     
            
                4.60
             |                                 
            
                272,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2011
             | 
            
                -1.00 / -3.19%
             |             
            
                31.90
             |           
            
                32.30
             |               
            
                30.30
             |                           
            
                30.30
             | 
            
                30.30
             |                     
            
                4.38
             |                                 
            
                262,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2011
             | 
            
                +1.40 / +4.68%
             |             
            
                30.50
             |           
            
                31.30
             |               
            
                30.50
             |                           
            
                31.30
             | 
            
                31.30
             |                     
            
                4.53
             |                                 
            
                350,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2011
             | 
            
                +1.40 / +4.91%
             |             
            
                27.10
             |           
            
                29.90
             |               
            
                27.10
             |                           
            
                29.90
             | 
            
                29.90
             |                     
            
                4.33
             |                                 
            
                613,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2011
             | 
            
                -1.40 / -4.68%
             |             
            
                28.50
             |           
            
                28.90
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.12
             |                                 
            
                417,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2011
             | 
            
                -1.50 / -4.78%
             |             
            
                30.60
             |           
            
                30.70
             |               
            
                29.90
             |                           
            
                29.90
             | 
            
                29.90
             |                     
            
                4.33
             |                                 
            
                606,270
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2011
             | 
            
                -1.40 / -4.27%
             |             
            
                32.50
             |           
            
                32.80
             |               
            
                31.20
             |                           
            
                31.40
             | 
            
                31.40
             |                     
            
                4.54
             |                                 
            
                697,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2011
             | 
            
                -1.70 / -4.93%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                4.75
             |                                 
            
                472,620
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2011
             | 
            
                -0.20 / -0.58%
             |             
            
                34.70
             |           
            
                35.00
             |               
            
                34.50
             |                           
            
                34.50
             | 
            
                34.50
             |                     
            
                4.99
             |                                 
            
                235,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2011
             | 
            
                -0.70 / -1.98%
             |             
            
                35.40
             |           
            
                35.40
             |               
            
                34.70
             |                           
            
                34.70
             | 
            
                34.70
             |                     
            
                5.02
             |                                 
            
                247,820
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2011
             | 
            
                -0.60 / -1.67%
             |             
            
                35.20
             |           
            
                36.00
             |               
            
                35.20
             |                           
            
                35.40
             | 
            
                35.40
             |                     
            
                5.12
             |                                 
            
                214,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2011
             | 
            
                -0.20 / -0.55%
             |             
            
                36.20
             |           
            
                36.20
             |               
            
                35.80
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                5.21
             |                                 
            
                157,040
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2011
             | 
            
                +0.20 / +0.56%
             |             
            
                35.80
             |           
            
                36.40
             |               
            
                35.80
             |                           
            
                36.20
             | 
            
                36.20
             |                     
            
                5.24
             |                                 
            
                275,510
             |  
            
                 
             |                                                              
             
    
         
    
    
 |