| 
                 
                    Closing price on 9/3/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    35.50 | 
                 
                
                    | High | 
                    35.80 | 
                 
                
                    | Low | 
                    34.00 | 
                     
                
                    | Volume | 
                    481,400 | 
                                 
                
                    | Split-adjusted Price | 
                    3.04 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DBC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/3/2009
             | 
            
                -1.30 / -3.63%
             |             
            
                35.50
             |           
            
                35.80
             |               
            
                34.00
             |                           
            
                34.50
             | 
            
                34.75
             |                     
            
                3.04
             |                                 
            
                481,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2009
             | 
            
                -1.20 / -3.24%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                35.00
             |                           
            
                35.80
             | 
            
                36.17
             |                     
            
                3.16
             |                                 
            
                200,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2009
             | 
            
                +0.10 / +0.27%
             |             
            
                38.40
             |           
            
                38.40
             |               
            
                36.30
             |                           
            
                37.00
             | 
            
                36.92
             |                     
            
                3.26
             |                                 
            
                324,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2009
             | 
            
                +0.60 / +1.65%
             |             
            
                36.00
             |           
            
                37.00
             |               
            
                36.00
             |                           
            
                36.90
             | 
            
                36.53
             |                     
            
                3.25
             |                                 
            
                205,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2009
             | 
            
                +0.60 / +1.68%
             |             
            
                37.20
             |           
            
                37.20
             |               
            
                35.00
             |                           
            
                36.30
             | 
            
                35.89
             |                     
            
                3.20
             |                                 
            
                311,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2009
             | 
            
                +1.90 / +5.62%
             |             
            
                33.80
             |           
            
                35.70
             |               
            
                33.80
             |                           
            
                35.70
             | 
            
                34.85
             |                     
            
                3.15
             |                                 
            
                536,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2009
             | 
            
                +1.10 / +3.36%
             |             
            
                32.80
             |           
            
                34.00
             |               
            
                32.50
             |                           
            
                33.80
             | 
            
                33.43
             |                     
            
                2.98
             |                                 
            
                435,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2009
             | 
            
                +0.50 / +1.55%
             |             
            
                33.00
             |           
            
                33.20
             |               
            
                32.00
             |                           
            
                32.70
             | 
            
                32.62
             |                     
            
                2.88
             |                                 
            
                352,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2009
             | 
            
                -0.60 / -1.83%
             |             
            
                32.00
             |           
            
                33.50
             |               
            
                32.00
             |                           
            
                32.20
             | 
            
                32.63
             |                     
            
                2.84
             |                                 
            
                316,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2009
             | 
            
                -0.10 / -0.30%
             |             
            
                32.50
             |           
            
                33.10
             |               
            
                32.30
             |                           
            
                32.80
             | 
            
                32.71
             |                     
            
                2.89
             |                                 
            
                479,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/19/2009
             | 
            
                0.00 / 0.00%
             |             
            
                33.30
             |           
            
                33.50
             |               
            
                32.50
             |                           
            
                32.90
             | 
            
                33.00
             |                     
            
                2.90
             |                                 
            
                529,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2009
             | 
            
                +1.00 / +3.13%
             |             
            
                31.80
             |           
            
                33.30
             |               
            
                31.50
             |                           
            
                32.90
             | 
            
                32.69
             |                     
            
                2.90
             |                                 
            
                593,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2009
             | 
            
                0.00 / 0.00%
             |             
            
                29.50
             |           
            
                32.50
             |               
            
                29.10
             |                           
            
                31.90
             | 
            
                31.91
             |                     
            
                2.81
             |                                 
            
                363,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2009
             | 
            
                +1.10 / +3.57%
             |             
            
                30.60
             |           
            
                32.00
             |               
            
                30.60
             |                           
            
                31.90
             | 
            
                31.22
             |                     
            
                2.81
             |                                 
            
                417,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2009
             | 
            
                -0.10 / -0.32%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                30.60
             |                           
            
                30.80
             | 
            
                30.91
             |                     
            
                2.72
             |                                 
            
                379,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2009
             | 
            
                0.00 / 0.00%
             |             
            
                30.50
             |           
            
                31.50
             |               
            
                30.50
             |                           
            
                30.90
             | 
            
                30.86
             |                     
            
                2.72
             |                                 
            
                262,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2009
             | 
            
                -0.30 / -0.96%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                30.00
             |                           
            
                30.90
             | 
            
                30.80
             |                     
            
                2.72
             |                                 
            
                198,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2009
             | 
            
                +1.00 / +3.31%
             |             
            
                30.70
             |           
            
                31.40
             |               
            
                30.50
             |                           
            
                31.20
             | 
            
                30.94
             |                     
            
                2.75
             |                                 
            
                307,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2009
             | 
            
                +0.30 / +1.00%
             |             
            
                29.70
             |           
            
                30.50
             |               
            
                29.50
             |                           
            
                30.20
             | 
            
                30.12
             |                     
            
                2.66
             |                                 
            
                308,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2009
             | 
            
                -0.10 / -0.33%
             |             
            
                30.00
             |           
            
                31.00
             |               
            
                29.50
             |                           
            
                29.90
             | 
            
                30.21
             |                     
            
                2.64
             |                                 
            
                492,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2009
             | 
            
                +1.50 / +5.26%
             |             
            
                28.50
             |           
            
                30.10
             |               
            
                28.50
             |                           
            
                30.00
             | 
            
                29.44
             |                     
            
                2.65
             |                                 
            
                386,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2009
             | 
            
                0.00 / 0.00%
             |             
            
                29.90
             |           
            
                29.90
             |               
            
                28.40
             |                           
            
                28.50
             | 
            
                28.66
             |                     
            
                2.51
             |                                 
            
                230,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2009
             | 
            
                -0.20 / -0.70%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                28.20
             |                           
            
                28.50
             | 
            
                28.55
             |                     
            
                2.51
             |                                 
            
                206,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2009
             | 
            
                +0.60 / +2.14%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                28.00
             |                           
            
                28.70
             | 
            
                28.63
             |                     
            
                2.53
             |                                 
            
                238,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2009
             | 
            
                -0.40 / -1.40%
             |             
            
                28.00
             |           
            
                28.40
             |               
            
                27.60
             |                           
            
                28.10
             | 
            
                28.00
             |                     
            
                2.48
             |                                 
            
                164,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2009
             | 
            
                -0.10 / -0.35%
             |             
            
                29.00
             |           
            
                29.50
             |               
            
                28.00
             |                           
            
                28.50
             | 
            
                28.87
             |                     
            
                2.51
             |                                 
            
                236,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2009
             | 
            
                -1.40 / -4.67%
             |             
            
                30.50
             |           
            
                30.50
             |               
            
                28.20
             |                           
            
                28.60
             | 
            
                29.00
             |                     
            
                2.52
             |                                 
            
                373,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2009
             | 
            
                +0.60 / +2.04%
             |             
            
                31.30
             |           
            
                31.40
             |               
            
                28.50
             |                           
            
                30.00
             | 
            
                30.28
             |                     
            
                2.65
             |                                 
            
                400,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2009
             | 
            
                +1.60 / +5.76%
             |             
            
                29.20
             |           
            
                29.40
             |               
            
                29.20
             |                           
            
                29.40
             | 
            
                29.40
             |                     
            
                2.59
             |                                 
            
                308,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2009
             | 
            
                +1.60 / +6.11%
             |             
            
                25.80
             |           
            
                28.00
             |               
            
                25.50
             |                           
            
                27.80
             | 
            
                27.46
             |                     
            
                2.45
             |                                 
            
                288,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |