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                    Closing price on 7/4/2011
                 |  |  
    
        |           
                
                    | Open | 16.80 |  
                    | High | 17.70 |  
                    | Low | 16.70 |  
                    | Volume | 39,820 |  
                    | Split-adjusted Price | 5.48 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/4/2011 | -0.10 / -0.59% | 16.80 | 17.70 | 16.70 | 16.90 | 16.90 | 5.48 | 39,820 |   |  
            | 7/1/2011 | -0.50 / -2.86% | 17.50 | 17.50 | 16.80 | 17.00 | 17.00 | 5.51 | 92,090 |   |  			
            | 6/30/2011 | -0.20 / -1.13% | 18.00 | 18.00 | 17.20 | 17.50 | 17.50 | 5.67 | 51,050 |   |  
            | 6/29/2011 | +0.30 / +1.72% | 17.40 | 17.80 | 17.40 | 17.70 | 17.70 | 5.74 | 272,860 |   |  			
            | 6/28/2011 | -0.60 / -3.33% | 18.00 | 18.00 | 17.40 | 17.40 | 17.40 | 5.64 | 82,200 |   |  
            | 6/27/2011 | +0.30 / +1.69% | 18.20 | 18.20 | 17.70 | 18.00 | 18.00 | 5.84 | 22,540 |   |  			
            | 6/24/2011 | 0.00 / 0.00% | 17.60 | 18.00 | 17.60 | 17.70 | 17.70 | 5.74 | 44,120 |   |  
            | 6/23/2011 | -0.30 / -1.67% | 17.60 | 18.30 | 17.30 | 17.70 | 17.70 | 5.74 | 96,640 |   |  			
            | 6/22/2011 | -0.40 / -2.17% | 18.90 | 18.90 | 18.00 | 18.00 | 18.00 | 5.84 | 99,580 |   |  
            | 6/21/2011 | +0.60 / +3.37% | 18.20 | 18.50 | 17.60 | 18.40 | 18.40 | 5.97 | 171,110 |   |  			
            | 6/20/2011 | +0.70 / +4.09% | 17.50 | 17.90 | 17.10 | 17.80 | 17.80 | 5.77 | 351,020 |   |  
            | 6/17/2011 | -0.90 / -5.00% | 18.60 | 18.60 | 17.10 | 17.10 | 17.10 | 5.54 | 370,490 |   |  			
            | 6/16/2011 | +0.40 / +2.27% | 17.00 | 18.20 | 17.00 | 18.00 | 18.00 | 5.84 | 83,610 |   |  
            | 6/15/2011 | -0.90 / -4.86% | 18.10 | 18.40 | 17.60 | 17.60 | 17.60 | 5.71 | 206,320 |   |  			
            | 6/14/2011 | -0.50 / -2.63% | 18.40 | 19.90 | 18.40 | 18.50 | 18.50 | 6.00 | 222,460 |   |  
            | 6/13/2011 | +0.50 / +2.70% | 18.30 | 19.00 | 18.20 | 19.00 | 19.00 | 6.16 | 149,670 |   |  			
            | 6/10/2011 | +0.30 / +1.65% | 19.00 | 19.00 | 18.00 | 18.50 | 18.50 | 6.00 | 206,670 |   |  
            | 6/9/2011 | +0.80 / +4.60% | 17.90 | 18.20 | 17.80 | 18.20 | 18.20 | 5.90 | 556,540 |   |  			
            | 6/8/2011 | +0.80 / +4.82% | 16.60 | 17.40 | 16.50 | 17.40 | 17.40 | 5.64 | 402,210 |   |  
            | 6/7/2011 | +0.70 / +4.40% | 16.50 | 16.60 | 16.50 | 16.60 | 16.60 | 5.38 | 78,350 |   |  			
            | 6/6/2011 | +0.10 / +0.63% | 15.80 | 16.10 | 15.40 | 15.90 | 15.90 | 5.16 | 378,180 |   |  
            | 6/3/2011 | -0.60 / -3.66% | 17.10 | 17.20 | 15.80 | 15.80 | 15.80 | 5.12 | 294,020 |   |  			
            | 6/2/2011 | +0.70 / +4.46% | 16.40 | 16.40 | 16.30 | 16.40 | 16.40 | 5.32 | 144,520 |   |  
            | 6/1/2011 | +0.70 / +4.67% | 14.50 | 15.70 | 14.50 | 15.70 | 15.70 | 5.09 | 206,370 |   |  			
            | 5/31/2011 | +0.10 / +0.67% | 14.30 | 15.00 | 14.30 | 15.00 | 15.00 | 4.86 | 57,000 |   |  
            | 5/30/2011 | -0.70 / -4.49% | 15.70 | 15.80 | 14.90 | 14.90 | 14.90 | 4.83 | 338,100 |   |  			
            | 5/27/2011 | +0.70 / +4.70% | 15.50 | 15.60 | 15.00 | 15.60 | 15.60 | 5.06 | 167,300 |   |  
            | 5/26/2011 | +0.70 / +4.93% | 13.50 | 14.90 | 13.50 | 14.90 | 14.90 | 4.83 | 185,660 |   |  			
            | 5/25/2011 | -0.70 / -4.70% | 15.20 | 15.20 | 14.20 | 14.20 | 14.20 | 4.60 | 270,030 |   |  
            | 5/24/2011 | -0.40 / -2.61% | 14.90 | 15.00 | 14.60 | 14.90 | 14.90 | 4.83 | 192,770 |   |  |