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                    Closing price on 5/17/2012
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                    | Open | 21.00 |  
                    | High | 21.80 |  
                    | Low | 20.90 |  
                    | Volume | 297,670 |  
                    | Split-adjusted Price | 8.48 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/17/2012 | +0.70 / +3.37% | 21.00 | 21.80 | 20.90 | 21.50 | 21.50 | 8.48 | 297,670 |   |  
            | 5/16/2012 | -1.00 / -4.59% | 21.60 | 22.00 | 20.80 | 20.80 | 20.80 | 8.21 | 354,960 |   |  			
            | 5/15/2012 | -1.10 / -4.80% | 22.10 | 22.90 | 21.80 | 21.80 | 21.80 | 8.60 | 331,560 |   |  
            | 5/14/2012 | -1.20 / -4.98% | 24.00 | 24.40 | 22.90 | 22.90 | 22.90 | 9.04 | 322,730 |   |  			
            | 5/11/2012 | -1.20 / -4.74% | 25.50 | 25.60 | 24.10 | 24.10 | 24.10 | 9.51 | 350,560 |   |  
            | 5/10/2012 | -0.70 / -2.69% | 27.00 | 27.00 | 24.70 | 25.30 | 25.30 | 9.98 | 413,410 |   |  			
            | 5/9/2012 | +0.20 / +0.78% | 25.70 | 26.90 | 25.00 | 26.00 | 26.00 | 10.26 | 548,540 |   |  
            | 5/8/2012 | +0.90 / +3.61% | 26.10 | 26.10 | 25.30 | 25.80 | 25.80 | 10.18 | 885,040 |   |  			
            | 5/7/2012 | +1.10 / +4.62% | 24.90 | 24.90 | 24.90 | 24.90 | 24.90 | 9.83 | 35,110 |   |  
            | 5/4/2012 | +1.10 / +4.85% | 23.80 | 23.80 | 23.70 | 23.80 | 23.80 | 9.39 | 179,340 |   |  			
            | 5/3/2012 | -0.20 / -0.87% | 22.20 | 23.00 | 21.80 | 22.70 | 22.70 | 8.96 | 524,340 |   |  
            | 5/2/2012 | -1.20 / -4.98% | 23.50 | 24.20 | 22.90 | 22.90 | 22.90 | 9.04 | 438,800 |   |  			
            | 4/27/2012 | +0.40 / +1.69% | 23.70 | 24.80 | 23.20 | 24.10 | 24.10 | 9.51 | 465,990 |   |  
            | 4/26/2012 | +0.40 / +1.72% | 23.80 | 24.40 | 23.60 | 23.70 | 23.70 | 9.35 | 602,050 |   |  			
            | 4/25/2012 | +1.10 / +4.95% | 23.20 | 23.30 | 23.00 | 23.30 | 23.30 | 9.19 | 269,600 |   |  
            | 4/24/2012 | +1.00 / +4.72% | 21.80 | 22.20 | 21.30 | 22.20 | 22.20 | 8.76 | 231,700 |   |  			
            | 4/23/2012 | +1.00 / +4.95% | 20.90 | 21.20 | 20.30 | 21.20 | 21.20 | 8.37 | 146,940 |   |  
            | 4/20/2012 | +0.90 / +4.66% | 19.30 | 20.20 | 19.30 | 20.20 | 20.20 | 7.97 | 451,430 |   |  			
            | 4/19/2012 | -0.20 / -1.03% | 19.60 | 20.40 | 19.20 | 19.30 | 19.30 | 7.62 | 939,550 |   |  
            | 4/18/2012 | +0.90 / +4.84% | 19.50 | 19.50 | 19.30 | 19.50 | 19.50 | 7.69 | 736,200 |   |  			
            | 4/17/2012 | +0.80 / +4.49% | 18.60 | 18.60 | 18.60 | 18.60 | 18.60 | 7.34 | 38,040 |   |  
            | 4/16/2012 | +0.80 / +4.71% | 17.00 | 17.80 | 17.00 | 17.80 | 17.80 | 7.02 | 57,150 |   |  			
            | 4/13/2012 | -0.30 / -1.73% | 17.10 | 17.40 | 16.70 | 17.00 | 17.00 | 6.71 | 331,080 |   |  
            | 4/12/2012 | 0.00 / 0.00% | 17.50 | 17.80 | 16.80 | 17.30 | 17.30 | 6.83 | 429,020 |   |  			
            | 4/11/2012 | +0.70 / +4.22% | 17.30 | 17.40 | 16.90 | 17.30 | 17.30 | 6.83 | 256,000 |   |  
            | 4/10/2012 | -0.50 / -2.92% | 17.10 | 17.60 | 16.60 | 16.60 | 16.60 | 6.55 | 246,700 |   |  			
            | 4/9/2012 | +0.80 / +4.91% | 17.00 | 17.10 | 16.90 | 17.10 | 17.10 | 6.75 | 696,310 |   |  
            | 4/6/2012 | +0.70 / +4.49% | 16.00 | 16.30 | 15.90 | 16.30 | 16.30 | 6.43 | 169,100 |   |  			
            | 4/5/2012 | +0.70 / +4.70% | 14.90 | 15.60 | 14.80 | 15.60 | 15.60 | 6.16 | 120,270 |   |  
            | 4/4/2012 | -0.30 / -1.97% | 15.50 | 15.50 | 14.90 | 14.90 | 14.90 | 5.88 | 101,140 |   |  |