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                    Closing price on 8/15/2011
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        |           
                
                    | Open | 14.70 |  
                    | High | 14.80 |  
                    | Low | 14.60 |  
                    | Volume | 39,650 |  
                    | Split-adjusted Price | 5.11 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/15/2011 | 0.00 / 0.00% | 14.70 | 14.80 | 14.60 | 14.60 | 14.60 | 5.11 | 39,650 |   |  
            | 8/12/2011 | -0.10 / -0.68% | 14.80 | 14.90 | 14.60 | 14.60 | 14.60 | 5.11 | 82,830 |   |  			
            | 8/11/2011 | 0.00 / 0.00% | 14.40 | 14.70 | 14.20 | 14.70 | 14.70 | 5.15 | 87,990 |   |  
            | 8/10/2011 | +0.40 / +2.80% | 14.80 | 14.90 | 14.40 | 14.70 | 14.70 | 5.15 | 290,310 |   |  			
            | 8/9/2011 | -0.70 / -4.67% | 14.40 | 14.50 | 14.30 | 14.30 | 14.30 | 5.01 | 196,320 |   |  
            | 8/8/2011 | -0.20 / -1.32% | 15.00 | 15.20 | 15.00 | 15.00 | 15.00 | 5.25 | 70,010 |   |  			
            | 8/5/2011 | 0.00 / 0.00% | 15.30 | 15.40 | 15.20 | 15.20 | 15.20 | 5.32 | 80,480 |   |  
            | 8/4/2011 | +0.70 / +4.83% | 15.00 | 15.20 | 14.90 | 15.20 | 15.20 | 5.32 | 92,800 |   |  			
            | 8/3/2011 | -0.10 / -0.68% | 14.40 | 15.00 | 14.40 | 14.50 | 14.50 | 5.08 | 50,590 |   |  
            | 8/2/2011 | -0.20 / -1.35% | 14.80 | 14.80 | 14.60 | 14.60 | 14.60 | 5.11 | 61,770 |   |  			
            | 8/1/2011 | -0.20 / -1.33% | 14.90 | 15.00 | 14.80 | 14.80 | 14.80 | 5.18 | 32,030 |   |  
            | 7/29/2011 | -0.30 / -1.96% | 15.30 | 15.30 | 15.00 | 15.00 | 15.00 | 5.25 | 50,740 |   |  			
            | 7/28/2011 | +0.10 / +0.66% | 15.10 | 15.60 | 15.10 | 15.30 | 15.30 | 5.36 | 15,790 |   |  
            | 7/27/2011 | -0.10 / -0.65% | 15.30 | 15.30 | 15.10 | 15.20 | 15.20 | 5.32 | 26,560 |   |  			
            | 7/26/2011 | 0.00 / 0.00% | 15.30 | 15.60 | 15.10 | 15.30 | 15.30 | 5.36 | 81,280 |   |  
            | 7/25/2011 | -0.20 / -1.29% | 15.60 | 15.80 | 15.30 | 15.30 | 15.30 | 5.36 | 35,500 |   |  			
            | 7/22/2011 | -0.40 / -2.52% | 15.60 | 16.00 | 15.50 | 15.50 | 15.50 | 5.43 | 56,120 |   |  
            | 7/21/2011 | -0.10 / -0.63% | 16.00 | 16.20 | 15.90 | 15.90 | 15.90 | 5.57 | 54,500 |   |  			
            | 7/20/2011 | +0.40 / +2.56% | 15.70 | 16.10 | 15.70 | 16.00 | 16.00 | 5.60 | 31,880 |   |  
            | 7/19/2011 | -0.20 / -1.27% | 16.00 | 16.00 | 15.60 | 15.60 | 15.60 | 5.46 | 51,040 |   |  			
            | 7/18/2011 | -0.20 / -1.25% | 16.00 | 16.10 | 15.80 | 15.80 | 15.80 | 5.53 | 43,930 |   |  
            | 7/15/2011 | +0.60 / +3.90% | 15.70 | 16.10 | 15.60 | 16.00 | 16.00 | 5.60 | 557,840 |   |  			
            | 7/14/2011 | +0.20 / +1.32% | 15.40 | 15.40 | 15.00 | 15.40 | 15.40 | 5.39 | 24,020 |   |  
            | 7/13/2011 | +0.10 / +0.66% | 15.70 | 15.70 | 15.10 | 15.20 | 15.20 | 5.32 | 16,220 |   |  			
            | 7/12/2011 | -1.10 / -6.79% | 15.40 | 15.60 | 15.00 | 15.10 | 15.10 | 5.29 | 55,490 |   |  
            | 7/11/2011 | 0.00 / 0.00% | 16.00 | 16.30 | 16.00 | 16.20 | 16.20 | 5.25 | 360,470 |   |  			
            | 7/8/2011 | -0.20 / -1.22% | 16.40 | 16.50 | 16.00 | 16.20 | 16.20 | 5.25 | 160,050 |   |  
            | 7/7/2011 | -0.50 / -2.96% | 16.70 | 17.10 | 16.30 | 16.40 | 16.40 | 5.32 | 120,970 |   |  			
            | 7/6/2011 | -0.40 / -2.31% | 17.40 | 17.40 | 16.80 | 16.90 | 16.90 | 5.48 | 28,760 |   |  
            | 7/5/2011 | +0.40 / +2.37% | 17.50 | 17.70 | 17.00 | 17.30 | 17.30 | 5.61 | 156,060 |   |  |