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                    Closing price on 5/26/2011
                 |  |  
    
        |           
                
                    | Open | 13.50 |  
                    | High | 14.90 |  
                    | Low | 13.50 |  
                    | Volume | 185,660 |  
                    | Split-adjusted Price | 4.83 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 5/23/2011 | -0.80 / -4.97% | 15.70 | 16.10 | 15.30 | 15.30 | 15.30 | 4.96 | 483,090 |   |  			
            | 5/20/2011 | -0.70 / -4.17% | 16.80 | 16.80 | 16.00 | 16.10 | 16.10 | 5.22 | 242,990 |   |  
            | 5/19/2011 | -0.50 / -2.89% | 17.10 | 17.50 | 16.80 | 16.80 | 16.80 | 5.45 | 130,080 |   |  			
            | 5/18/2011 | -0.40 / -2.26% | 17.30 | 17.60 | 17.00 | 17.30 | 17.30 | 5.61 | 187,380 |   |  
            | 5/17/2011 | -0.50 / -2.75% | 18.50 | 18.50 | 17.60 | 17.70 | 17.70 | 5.74 | 358,270 |   |  			
            | 5/16/2011 | +0.20 / +1.11% | 18.80 | 18.90 | 18.10 | 18.20 | 18.20 | 5.90 | 360,630 |   |  
            | 5/13/2011 | +0.80 / +4.65% | 17.20 | 18.00 | 17.00 | 18.00 | 18.00 | 5.84 | 204,740 |   |  			
            | 5/12/2011 | -0.20 / -1.15% | 17.50 | 17.60 | 17.20 | 17.20 | 17.20 | 5.58 | 73,610 |   |  
            | 5/11/2011 | +0.10 / +0.58% | 17.70 | 17.80 | 17.30 | 17.40 | 17.40 | 5.64 | 94,840 |   |  			
            | 5/10/2011 | -0.40 / -2.26% | 17.70 | 18.00 | 17.30 | 17.30 | 17.30 | 5.61 | 112,500 |   |  
            | 5/9/2011 | +0.30 / +1.72% | 17.70 | 17.70 | 17.40 | 17.70 | 17.70 | 5.74 | 43,120 |   |  			
            | 5/6/2011 | +0.10 / +0.58% | 17.50 | 17.60 | 17.20 | 17.40 | 17.40 | 5.64 | 275,630 |   |  
            | 5/5/2011 | -0.30 / -1.70% | 17.30 | 17.90 | 17.00 | 17.30 | 17.30 | 5.61 | 83,170 |   |  			
            | 5/4/2011 | 0.00 / 0.00% | 18.00 | 18.30 | 17.60 | 17.60 | 17.60 | 5.71 | 30,600 |   |  
            | 4/29/2011 | +0.40 / +2.33% | 17.40 | 18.00 | 17.10 | 17.60 | 17.60 | 5.71 | 112,430 |   |  			
            | 4/28/2011 | -0.20 / -1.15% | 17.40 | 17.60 | 17.20 | 17.20 | 17.20 | 5.58 | 49,090 |   |  
            | 4/27/2011 | 0.00 / 0.00% | 17.80 | 17.80 | 17.20 | 17.40 | 17.40 | 5.64 | 82,190 |   |  			
            | 4/26/2011 | -0.70 / -3.87% | 17.50 | 18.40 | 17.30 | 17.40 | 17.40 | 5.64 | 123,980 |   |  
            | 4/25/2011 | +0.80 / +4.62% | 17.90 | 18.10 | 17.90 | 18.10 | 18.10 | 5.87 | 168,270 |   |  			
            | 4/22/2011 | -0.30 / -1.70% | 17.30 | 17.80 | 16.90 | 17.30 | 17.30 | 5.61 | 77,030 |   |  
            | 4/21/2011 | -0.50 / -2.76% | 18.10 | 18.40 | 17.60 | 17.60 | 17.60 | 5.71 | 99,550 |   |  			
            | 4/20/2011 | +0.10 / +0.56% | 18.00 | 18.70 | 18.00 | 18.10 | 18.10 | 5.87 | 142,310 |   |  
            | 4/19/2011 | -0.50 / -2.70% | 17.90 | 18.60 | 17.90 | 18.00 | 18.00 | 5.84 | 71,890 |   |  			
            | 4/18/2011 | -0.90 / -4.64% | 19.10 | 19.10 | 18.50 | 18.50 | 18.50 | 6.00 | 153,300 |   |  
            | 4/15/2011 | -0.80 / -3.96% | 20.00 | 20.40 | 19.40 | 19.40 | 19.40 | 6.29 | 123,600 |   |  			
            | 4/14/2011 | -0.70 / -3.35% | 21.00 | 21.00 | 20.10 | 20.20 | 20.20 | 6.55 | 115,290 |   |  
            | 4/13/2011 | -0.60 / -2.79% | 21.60 | 21.70 | 20.90 | 20.90 | 20.90 | 6.78 | 301,440 |   |  |