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                    Closing price on 9/7/2012
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                    | Open | 16.80 |  
                    | High | 16.90 |  
                    | Low | 16.50 |  
                    | Volume | 37,230 |  
                    | Split-adjusted Price | 6.73 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/7/2012 | -0.10 / -0.60% | 16.80 | 16.90 | 16.50 | 16.60 | 16.60 | 6.73 | 37,230 |   |  
            | 9/6/2012 | +0.40 / +2.45% | 16.30 | 17.10 | 16.30 | 16.70 | 16.70 | 6.77 | 114,750 |   |  			
            | 9/5/2012 | -0.70 / -4.12% | 16.70 | 16.70 | 16.20 | 16.30 | 16.30 | 6.61 | 40,240 |   |  
            | 9/4/2012 | +0.30 / +1.80% | 16.30 | 17.00 | 16.30 | 17.00 | 17.00 | 6.89 | 11,820 |   |  			
            | 8/31/2012 | -0.20 / -1.18% | 16.80 | 16.80 | 16.50 | 16.70 | 16.70 | 6.77 | 18,300 |   |  
            | 8/30/2012 | +0.40 / +2.42% | 16.50 | 16.90 | 16.50 | 16.90 | 16.90 | 6.85 | 27,860 |   |  			
            | 8/29/2012 | +0.70 / +4.43% | 16.40 | 16.50 | 16.20 | 16.50 | 16.50 | 6.69 | 99,460 |   |  
            | 8/28/2012 | -0.40 / -2.47% | 16.20 | 16.20 | 15.60 | 15.80 | 15.80 | 6.40 | 68,700 |   |  			
            | 8/27/2012 | -0.80 / -4.71% | 17.30 | 17.30 | 16.20 | 16.20 | 16.20 | 6.57 | 307,000 |   |  
            | 8/24/2012 | +0.20 / +1.19% | 16.00 | 17.50 | 16.00 | 17.00 | 17.00 | 6.89 | 222,300 |   |  			
            | 8/23/2012 | -0.80 / -4.55% | 17.50 | 17.50 | 16.80 | 16.80 | 16.80 | 6.81 | 119,490 |   |  
            | 8/22/2012 | -1.30 / -6.88% | 17.50 | 18.10 | 17.50 | 17.60 | 17.60 | 7.13 | 155,440 |   |  			
            | 8/21/2012 | -0.90 / -4.55% | 19.70 | 19.70 | 18.90 | 18.90 | 18.90 | 7.46 | 214,760 |   |  
            | 8/20/2012 | +0.10 / +0.51% | 19.60 | 19.90 | 19.50 | 19.80 | 19.80 | 7.81 | 77,620 |   |  			
            | 8/17/2012 | +0.40 / +2.07% | 19.30 | 19.70 | 19.30 | 19.70 | 19.70 | 7.77 | 57,250 |   |  
            | 8/16/2012 | -0.40 / -2.03% | 19.70 | 19.80 | 19.30 | 19.30 | 19.30 | 7.62 | 87,810 |   |  			
            | 8/15/2012 | -0.10 / -0.51% | 19.70 | 19.90 | 19.50 | 19.70 | 19.70 | 7.77 | 42,270 |   |  
            | 8/14/2012 | +0.10 / +0.51% | 19.70 | 20.20 | 19.70 | 19.80 | 19.80 | 7.81 | 152,830 |   |  			
            | 8/13/2012 | -0.10 / -0.51% | 20.00 | 20.00 | 19.50 | 19.70 | 19.70 | 7.77 | 44,750 |   |  
            | 8/10/2012 | 0.00 / 0.00% | 20.00 | 20.00 | 19.60 | 19.80 | 19.80 | 7.81 | 62,660 |   |  			
            | 8/9/2012 | +0.30 / +1.54% | 19.70 | 20.10 | 19.70 | 19.80 | 19.80 | 7.81 | 81,100 |   |  
            | 8/8/2012 | -0.20 / -1.02% | 19.70 | 19.80 | 19.40 | 19.50 | 19.50 | 7.69 | 46,790 |   |  			
            | 8/7/2012 | 0.00 / 0.00% | 19.70 | 19.70 | 19.30 | 19.70 | 19.70 | 7.77 | 48,490 |   |  
            | 8/6/2012 | +0.50 / +2.60% | 19.50 | 20.00 | 19.20 | 19.70 | 19.70 | 7.77 | 55,150 |   |  			
            | 8/3/2012 | -0.10 / -0.52% | 19.20 | 19.30 | 19.10 | 19.20 | 19.20 | 7.58 | 29,750 |   |  
            | 8/2/2012 | -0.20 / -1.03% | 19.50 | 19.60 | 19.30 | 19.30 | 19.30 | 7.62 | 19,920 |   |  			
            | 8/1/2012 | -0.10 / -0.51% | 19.30 | 19.60 | 18.90 | 19.50 | 19.50 | 7.69 | 74,900 |   |  
            | 7/31/2012 | 0.00 / 0.00% | 19.80 | 19.80 | 19.40 | 19.60 | 19.60 | 7.73 | 35,530 |   |  			
            | 7/30/2012 | +0.10 / +0.51% | 19.60 | 19.60 | 19.20 | 19.60 | 19.60 | 7.73 | 72,310 |   |  
            | 7/27/2012 | -0.20 / -1.02% | 19.90 | 19.90 | 19.20 | 19.50 | 19.50 | 7.69 | 88,810 |   |  |