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                    Closing price on 6/23/2008
                 |  |  
    
        |           
                
                    | Open | 47.10 |  
                    | High | 47.10 |  
                    | Low | 47.10 |  
                    | Volume | 26,540 |  
                    | Split-adjusted Price | 9.21 |  
                
             | 
 |  DQC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/23/2008 | -1.40 / -2.89% | 47.10 | 47.10 | 47.10 | 47.10 | 47.10 | 9.21 | 26,540 |   |  
            | 6/20/2008 | -1.50 / -3.00% | 48.50 | 48.50 | 48.50 | 48.50 | 48.50 | 9.48 | 2,810 |   |  			
            | 6/19/2008 | -1.50 / -2.91% | 50.00 | 50.00 | 50.00 | 50.00 | 50.00 | 9.78 | 12,490 |   |  
            | 6/18/2008 | -1.00 / -1.90% | 51.50 | 51.50 | 51.50 | 51.50 | 51.50 | 10.07 | 233,360 |   |  			
            | 6/17/2008 | +1.00 / +1.94% | 50.50 | 52.50 | 50.50 | 52.50 | 52.50 | 10.26 | 902,020 |   |  
            | 6/16/2008 | -1.00 / -1.90% | 51.50 | 51.50 | 51.50 | 51.50 | 51.50 | 10.07 | 35,760 |   |  			
            | 6/13/2008 | -1.00 / -1.87% | 52.50 | 52.50 | 52.50 | 52.50 | 52.50 | 10.26 | 70,490 |   |  
            | 6/12/2008 | -1.00 / -1.83% | 54.50 | 54.50 | 53.50 | 53.50 | 53.50 | 10.46 | 2,210 |   |  			
            | 6/11/2008 | -1.00 / -1.80% | 54.50 | 54.50 | 54.50 | 54.50 | 54.50 | 10.66 | 4,100 |   |  
            | 6/10/2008 | -1.00 / -1.77% | 55.50 | 55.50 | 55.50 | 55.50 | 55.50 | 10.85 | 10 |   |  			
            | 6/9/2008 | -1.00 / -1.74% | 56.50 | 56.50 | 56.50 | 56.50 | 56.50 | 11.05 | 10 |   |  
            | 6/6/2008 | -1.00 / -1.71% | 57.50 | 57.50 | 57.50 | 57.50 | 57.50 | 11.24 | 20 |   |  			
            | 6/5/2008 | -1.00 / -1.68% | 58.50 | 58.50 | 58.50 | 58.50 | 58.50 | 11.44 | 400 |   |  
            | 6/4/2008 | -1.00 / -1.65% | 59.50 | 59.50 | 59.50 | 59.50 | 59.50 | 11.63 | 20 |   |  			
            | 6/3/2008 | -1.00 / -1.63% | 60.50 | 60.50 | 60.50 | 60.50 | 60.50 | 11.83 | 10 |   |  
            | 6/2/2008 | -1.00 / -1.60% | 61.50 | 61.50 | 61.50 | 61.50 | 61.50 | 12.02 | 1,220 |   |  			
            | 5/30/2008 | -1.00 / -1.57% | 62.50 | 62.50 | 62.50 | 62.50 | 62.50 | 12.22 | 11,040 |   |  
            | 5/26/2008 | -1.00 / -1.55% | 63.50 | 63.50 | 63.50 | 63.50 | 63.50 | 12.41 | 10 |   |  			
            | 5/23/2008 | -1.00 / -1.53% | 64.50 | 64.50 | 64.50 | 64.50 | 64.50 | 12.61 | 2,710 |   |  
            | 5/22/2008 | -1.00 / -1.50% | 65.50 | 65.50 | 65.50 | 65.50 | 65.50 | 12.81 | 15,310 |   |  			
            | 5/21/2008 | -1.00 / -1.48% | 66.50 | 66.50 | 66.50 | 66.50 | 66.50 | 13.00 | 31,580 |   |  
            | 5/20/2008 | -1.00 / -1.46% | 67.50 | 67.50 | 67.50 | 67.50 | 67.50 | 13.20 | 400 |   |  			
            | 5/19/2008 | -1.00 / -1.44% | 68.50 | 68.50 | 68.50 | 68.50 | 68.50 | 13.39 | 14,210 |   |  
            | 5/16/2008 | -1.00 / -1.42% | 69.50 | 69.50 | 69.50 | 69.50 | 69.50 | 13.59 | 690 |   |  			
            | 5/15/2008 | -1.00 / -1.40% | 70.50 | 70.50 | 70.50 | 70.50 | 70.50 | 13.78 | 1,200 |   |  
            | 5/14/2008 | -1.00 / -1.38% | 71.50 | 71.50 | 71.50 | 71.50 | 71.50 | 13.98 | 290 |   |  			
            | 5/13/2008 | -1.00 / -1.36% | 72.50 | 72.50 | 72.50 | 72.50 | 72.50 | 14.17 | 100 |   |  
            | 5/12/2008 | -1.50 / -2.00% | 73.50 | 73.50 | 73.50 | 73.50 | 73.50 | 14.37 | 3,010 |   |  			
            | 5/9/2008 | -1.50 / -1.96% | 75.00 | 75.00 | 75.00 | 75.00 | 75.00 | 14.66 | 8,590 |   |  
            | 5/8/2008 | -1.50 / -1.92% | 76.50 | 76.50 | 76.50 | 76.50 | 76.50 | 14.96 | 10,440 |   |  |