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                    Closing price on 10/5/2010
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        |           
                
                    | Open | 30.50 |  
                    | High | 31.00 |  
                    | Low | 30.30 |  
                    | Volume | 505,300 |  
                    | Split-adjusted Price | 4.36 |  
                
             | 
 |  DPM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/5/2010 | +0.50 / +1.64% | 30.50 | 31.00 | 30.30 | 31.00 | 31.00 | 4.36 | 505,300 |   |  
            | 10/4/2010 | 0.00 / 0.00% | 30.70 | 30.70 | 29.80 | 30.50 | 30.50 | 4.29 | 549,270 |   |  			
            | 10/1/2010 | -0.10 / -0.33% | 30.40 | 30.70 | 30.40 | 30.50 | 30.50 | 4.29 | 236,120 |   |  
            | 9/30/2010 | -0.20 / -0.65% | 30.90 | 30.90 | 30.50 | 30.60 | 30.60 | 4.31 | 457,550 |   |  			
            | 9/29/2010 | 0.00 / 0.00% | 30.70 | 30.90 | 30.70 | 30.80 | 30.80 | 4.33 | 196,580 |   |  
            | 9/28/2010 | +0.20 / +0.65% | 30.60 | 31.00 | 30.60 | 30.80 | 30.80 | 4.33 | 161,360 |   |  			
            | 9/27/2010 | -0.20 / -0.65% | 30.80 | 30.80 | 30.60 | 30.60 | 30.60 | 4.31 | 141,760 |   |  
            | 9/24/2010 | 0.00 / 0.00% | 30.70 | 31.00 | 30.60 | 30.80 | 30.80 | 4.33 | 136,570 |   |  			
            | 9/23/2010 | +0.10 / +0.33% | 30.40 | 30.80 | 30.40 | 30.80 | 30.80 | 4.33 | 166,770 |   |  
            | 9/22/2010 | +0.50 / +1.66% | 30.20 | 30.70 | 30.20 | 30.70 | 30.70 | 4.32 | 170,130 |   |  			
            | 9/21/2010 | -0.80 / -2.58% | 31.00 | 31.00 | 30.20 | 30.20 | 30.20 | 4.25 | 598,280 |   |  
            | 9/20/2010 | +0.10 / +0.32% | 30.50 | 31.00 | 30.50 | 31.00 | 31.00 | 4.36 | 207,540 |   |  			
            | 9/17/2010 | +0.10 / +0.32% | 31.00 | 31.00 | 30.70 | 30.90 | 30.90 | 4.35 | 167,210 |   |  
            | 9/16/2010 | -0.20 / -0.65% | 31.00 | 31.00 | 30.80 | 30.80 | 30.80 | 4.33 | 239,920 |   |  			
            | 9/15/2010 | +0.30 / +0.98% | 30.90 | 31.00 | 30.50 | 31.00 | 31.00 | 4.36 | 344,090 |   |  
            | 9/14/2010 | 0.00 / 0.00% | 30.80 | 30.90 | 30.50 | 30.70 | 30.70 | 4.32 | 165,580 |   |  			
            | 9/13/2010 | +0.70 / +2.33% | 30.50 | 30.70 | 29.70 | 30.70 | 30.70 | 4.32 | 347,270 |   |  
            | 9/10/2010 | -0.80 / -2.60% | 31.00 | 31.00 | 30.00 | 30.00 | 30.00 | 4.22 | 416,670 |   |  			
            | 9/9/2010 | 0.00 / 0.00% | 30.80 | 31.50 | 30.70 | 30.80 | 30.80 | 4.33 | 406,820 |   |  
            | 9/8/2010 | +0.80 / +2.67% | 29.30 | 30.80 | 29.30 | 30.80 | 30.80 | 4.33 | 381,150 |   |  			
            | 9/7/2010 | -1.00 / -3.23% | 30.30 | 31.00 | 30.00 | 30.00 | 30.00 | 4.22 | 545,230 |   |  
            | 9/6/2010 | -0.90 / -2.82% | 32.00 | 32.00 | 31.00 | 31.00 | 31.00 | 4.36 | 531,650 |   |  			
            | 9/1/2010 | 0.00 / 0.00% | 31.90 | 32.00 | 31.30 | 31.90 | 31.90 | 4.49 | 572,200 |   |  
            | 8/31/2010 | 0.00 / 0.00% | 31.80 | 32.50 | 31.50 | 31.90 | 31.90 | 4.49 | 833,500 |   |  			
            | 8/30/2010 | +1.50 / +4.93% | 30.90 | 31.90 | 30.80 | 31.90 | 31.90 | 4.49 | 851,390 |   |  
            | 8/27/2010 | +0.90 / +3.05% | 29.30 | 30.80 | 29.20 | 30.40 | 30.40 | 4.28 | 525,280 |   |  			
            | 8/26/2010 | +0.90 / +3.15% | 28.60 | 29.50 | 28.60 | 29.50 | 29.50 | 4.15 | 623,720 |   |  
            | 8/25/2010 | +0.10 / +0.35% | 28.90 | 29.00 | 28.50 | 28.60 | 28.60 | 4.02 | 1,050,850 |   |  			
            | 8/24/2010 | -1.00 / -3.39% | 29.10 | 29.40 | 28.40 | 28.50 | 28.50 | 4.01 | 407,940 |   |  
            | 8/23/2010 | -0.40 / -1.34% | 30.00 | 30.00 | 29.50 | 29.50 | 29.50 | 4.15 | 261,940 |   |  |