| 
                 
                    Closing price on 3/3/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    34.00 | 
                 
                
                    | High | 
                    34.30 | 
                 
                
                    | Low | 
                    33.10 | 
                     
                
                    | Volume | 
                    48,900 | 
                                 
                
                    | Split-adjusted Price | 
                    3.13 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DBC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/3/2010
             | 
            
                +1.50 / +4.57%
             |             
            
                34.00
             |           
            
                34.30
             |               
            
                33.10
             |                           
            
                34.30
             | 
            
                33.82
             |                     
            
                3.13
             |                                 
            
                48,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2010
             | 
            
                -0.50 / -1.50%
             |             
            
                33.00
             |           
            
                33.30
             |               
            
                32.70
             |                           
            
                32.80
             | 
            
                33.01
             |                     
            
                3.00
             |                                 
            
                34,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2010
             | 
            
                +0.30 / +0.91%
             |             
            
                32.90
             |           
            
                33.80
             |               
            
                32.20
             |                           
            
                33.30
             | 
            
                32.96
             |                     
            
                3.04
             |                                 
            
                59,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2010
             | 
            
                +0.60 / +1.85%
             |             
            
                33.40
             |           
            
                33.40
             |               
            
                32.00
             |                           
            
                33.00
             | 
            
                32.83
             |                     
            
                3.01
             |                                 
            
                45,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2010
             | 
            
                -0.60 / -1.82%
             |             
            
                33.70
             |           
            
                33.70
             |               
            
                32.20
             |                           
            
                32.40
             | 
            
                32.32
             |                     
            
                2.96
             |                                 
            
                20,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2010
             | 
            
                +1.00 / +3.13%
             |             
            
                32.00
             |           
            
                33.00
             |               
            
                31.70
             |                           
            
                33.00
             | 
            
                32.19
             |                     
            
                3.01
             |                                 
            
                20,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2010
             | 
            
                -1.60 / -4.76%
             |             
            
                31.50
             |           
            
                32.50
             |               
            
                31.50
             |                           
            
                32.00
             | 
            
                32.25
             |                     
            
                2.92
             |                                 
            
                31,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2010
             | 
            
                -0.10 / -0.30%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                33.60
             |                           
            
                33.60
             | 
            
                33.77
             |                     
            
                3.07
             |                                 
            
                61,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2010
             | 
            
                -0.30 / -0.88%
             |             
            
                33.90
             |           
            
                34.00
             |               
            
                33.10
             |                           
            
                33.70
             | 
            
                33.64
             |                     
            
                3.08
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2010
             | 
            
                +1.30 / +3.98%
             |             
            
                32.80
             |           
            
                34.10
             |               
            
                32.70
             |                           
            
                34.00
             | 
            
                33.69
             |                     
            
                3.10
             |                                 
            
                32,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2010
             | 
            
                +1.20 / +3.81%
             |             
            
                32.10
             |           
            
                33.00
             |               
            
                31.80
             |                           
            
                32.70
             | 
            
                32.51
             |                     
            
                2.99
             |                                 
            
                88,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2010
             | 
            
                -1.10 / -3.37%
             |             
            
                32.00
             |           
            
                32.20
             |               
            
                31.00
             |                           
            
                31.50
             | 
            
                31.70
             |                     
            
                2.88
             |                                 
            
                75,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2010
             | 
            
                -1.30 / -3.83%
             |             
            
                33.90
             |           
            
                33.90
             |               
            
                32.60
             |                           
            
                32.60
             | 
            
                32.98
             |                     
            
                2.98
             |                                 
            
                68,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2010
             | 
            
                -0.70 / -2.02%
             |             
            
                34.00
             |           
            
                34.30
             |               
            
                33.30
             |                           
            
                33.90
             | 
            
                33.89
             |                     
            
                3.10
             |                                 
            
                65,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/4/2010
             | 
            
                +0.20 / +0.58%
             |             
            
                34.30
             |           
            
                35.00
             |               
            
                34.00
             |                           
            
                34.60
             | 
            
                34.63
             |                     
            
                3.16
             |                                 
            
                63,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2010
             | 
            
                +0.20 / +0.58%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                34.10
             |                           
            
                34.40
             | 
            
                34.59
             |                     
            
                3.14
             |                                 
            
                145,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2010
             | 
            
                +2.20 / +6.88%
             |             
            
                32.70
             |           
            
                34.20
             |               
            
                32.70
             |                           
            
                34.20
             | 
            
                34.19
             |                     
            
                3.12
             |                                 
            
                319,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2010
             | 
            
                +0.50 / +1.59%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                31.70
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                2.92
             |                                 
            
                31,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2010
             | 
            
                0.00 / 0.00%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                31.30
             |                           
            
                31.50
             | 
            
                31.51
             |                     
            
                2.88
             |                                 
            
                25,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2010
             | 
            
                -0.30 / -0.94%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                31.20
             |                           
            
                31.50
             | 
            
                31.54
             |                     
            
                2.88
             |                                 
            
                72,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/27/2010
             | 
            
                -1.70 / -5.07%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                31.50
             |                           
            
                31.80
             | 
            
                31.98
             |                     
            
                2.90
             |                                 
            
                39,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2010
             | 
            
                +1.40 / +4.36%
             |             
            
                32.40
             |           
            
                33.50
             |               
            
                32.40
             |                           
            
                33.50
             | 
            
                33.00
             |                     
            
                3.06
             |                                 
            
                155,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2010
             | 
            
                -0.10 / -0.31%
             |             
            
                32.10
             |           
            
                32.20
             |               
            
                32.00
             |                           
            
                32.10
             | 
            
                32.09
             |                     
            
                2.93
             |                                 
            
                6,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2010
             | 
            
                +0.20 / +0.63%
             |             
            
                30.50
             |           
            
                32.90
             |               
            
                30.50
             |                           
            
                32.20
             | 
            
                32.05
             |                     
            
                2.94
             |                                 
            
                78,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2010
             | 
            
                -0.70 / -2.14%
             |             
            
                31.80
             |           
            
                32.10
             |               
            
                31.30
             |                           
            
                32.00
             | 
            
                31.79
             |                     
            
                2.92
             |                                 
            
                124,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2010
             | 
            
                -1.30 / -3.82%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                32.70
             |                           
            
                32.70
             | 
            
                33.30
             |                     
            
                2.99
             |                                 
            
                101,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2010
             | 
            
                +1.20 / +3.66%
             |             
            
                33.20
             |           
            
                34.20
             |               
            
                33.20
             |                           
            
                34.00
             | 
            
                33.81
             |                     
            
                3.10
             |                                 
            
                116,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2010
             | 
            
                -0.80 / -2.38%
             |             
            
                32.00
             |           
            
                33.70
             |               
            
                31.50
             |                           
            
                32.80
             | 
            
                32.55
             |                     
            
                3.00
             |                                 
            
                162,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2010
             | 
            
                -1.40 / -4.00%
             |             
            
                33.30
             |           
            
                34.00
             |               
            
                33.30
             |                           
            
                33.60
             | 
            
                33.71
             |                     
            
                3.07
             |                                 
            
                7,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2010
             | 
            
                +0.20 / +0.57%
             |             
            
                35.00
             |           
            
                35.40
             |               
            
                34.40
             |                           
            
                35.00
             | 
            
                34.89
             |                     
            
                3.20
             |                                 
            
                122,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |