| 
                 
                    Closing price on 6/29/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.40 | 
                 
                
                    | High | 
                    17.80 | 
                 
                
                    | Low | 
                    17.40 | 
                     
                
                    | Volume | 
                    272,860 | 
                                 
                
                    | Split-adjusted Price | 
                    5.74 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DQC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |