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            | 
                    Closing price on 11/16/2010
                 |  |  
    
        |           
                
                    | Open | 19.40 |  
                    | High | 19.50 |  
                    | Low | 19.30 |  
                    | Volume | 358,410 |  
                    | Split-adjusted Price | 4.81 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/16/2010 | -1.00 / -4.93% | 19.40 | 19.50 | 19.30 | 19.30 | 19.30 | 4.81 | 358,410 |   |  
            | 11/15/2010 | -1.00 / -4.69% | 21.30 | 21.70 | 20.30 | 20.30 | 20.30 | 5.06 | 113,640 |   |  			
            | 11/12/2010 | -0.80 / -3.62% | 21.50 | 21.50 | 21.00 | 21.30 | 21.30 | 5.31 | 144,360 |   |  
            | 11/11/2010 | -1.10 / -4.74% | 23.20 | 23.20 | 22.10 | 22.10 | 22.10 | 5.51 | 78,130 |   |  			
            | 11/10/2010 | +0.20 / +0.87% | 23.00 | 23.30 | 23.00 | 23.20 | 23.20 | 5.79 | 113,680 |   |  
            | 11/9/2010 | -0.70 / -2.95% | 23.70 | 23.70 | 22.80 | 23.00 | 23.00 | 5.74 | 60,110 |   |  			
            | 11/8/2010 | 0.00 / 0.00% | 23.50 | 24.50 | 23.50 | 23.70 | 23.70 | 5.91 | 82,870 |   |  
            | 11/5/2010 | +1.10 / +4.87% | 23.50 | 23.70 | 22.80 | 23.70 | 23.70 | 5.91 | 133,120 |   |  			
            | 11/4/2010 | +0.30 / +1.35% | 22.10 | 22.70 | 22.10 | 22.60 | 22.60 | 5.64 | 89,190 |   |  
            | 11/3/2010 | -0.70 / -3.04% | 23.70 | 23.70 | 22.30 | 22.30 | 22.30 | 5.56 | 82,610 |   |  			
            | 11/2/2010 | -1.10 / -4.56% | 23.70 | 23.80 | 22.90 | 23.00 | 23.00 | 5.74 | 178,620 |   |  
            | 11/1/2010 | -0.40 / -1.63% | 24.90 | 24.90 | 24.10 | 24.10 | 24.10 | 6.01 | 76,520 |   |  			
            | 10/29/2010 | -0.10 / -0.41% | 24.40 | 25.10 | 24.40 | 24.50 | 24.50 | 6.11 | 69,430 |   |  
            | 10/28/2010 | +0.10 / +0.41% | 24.00 | 24.80 | 24.00 | 24.60 | 24.60 | 6.14 | 40,340 |   |  			
            | 10/27/2010 | -1.10 / -4.30% | 25.00 | 26.00 | 24.50 | 24.50 | 24.50 | 6.11 | 80,140 |   |  
            | 10/26/2010 | +1.20 / +4.92% | 25.10 | 25.60 | 25.00 | 25.60 | 25.60 | 6.38 | 195,940 |   |  			
            | 10/25/2010 | +0.40 / +1.67% | 24.00 | 24.50 | 23.50 | 24.40 | 24.40 | 6.09 | 88,280 |   |  
            | 10/22/2010 | -0.50 / -2.04% | 24.50 | 24.70 | 24.00 | 24.00 | 24.00 | 5.99 | 87,250 |   |  			
            | 10/21/2010 | 0.00 / 0.00% | 25.00 | 25.40 | 24.20 | 24.50 | 24.50 | 6.11 | 114,860 |   |  
            | 10/20/2010 | -1.20 / -4.67% | 24.90 | 25.70 | 24.50 | 24.50 | 24.50 | 6.11 | 471,030 |   |  			
            | 10/19/2010 | -1.10 / -4.10% | 26.60 | 26.80 | 25.50 | 25.70 | 25.70 | 6.41 | 141,410 |   |  
            | 10/18/2010 | -0.20 / -0.74% | 27.00 | 27.00 | 26.80 | 26.80 | 26.80 | 6.68 | 56,810 |   |  			
            | 10/15/2010 | +0.10 / +0.37% | 26.90 | 27.00 | 26.70 | 27.00 | 27.00 | 6.73 | 82,900 |   |  
            | 10/14/2010 | +0.30 / +1.13% | 27.00 | 27.30 | 26.60 | 26.90 | 26.90 | 6.71 | 105,370 |   |  			
            | 10/13/2010 | +0.10 / +0.38% | 26.10 | 26.70 | 26.10 | 26.60 | 26.60 | 6.63 | 75,040 |   |  
            | 10/12/2010 | -0.80 / -2.93% | 27.30 | 27.40 | 26.40 | 26.50 | 26.50 | 6.61 | 78,590 |   |  			
            | 10/11/2010 | -0.20 / -0.73% | 27.80 | 27.80 | 27.00 | 27.30 | 27.30 | 6.81 | 45,500 |   |  
            | 10/8/2010 | 0.00 / 0.00% | 27.50 | 28.30 | 27.50 | 27.50 | 27.50 | 6.86 | 145,250 |   |  			
            | 10/7/2010 | -1.00 / -3.51% | 28.50 | 28.90 | 27.50 | 27.50 | 27.50 | 6.86 | 84,910 |   |  
            | 10/6/2010 | +1.20 / +4.40% | 28.10 | 28.50 | 27.50 | 28.50 | 28.50 | 7.11 | 110,600 |   |  |