| 
                 
                    Closing price on 1/30/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    40.20 | 
                 
                
                    | High | 
                    42.50 | 
                 
                
                    | Low | 
                    40.00 | 
                     
                
                    | Volume | 
                    51,900 | 
                                 
                
                    | Split-adjusted Price | 
                    42.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DCS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/30/2008
             | 
            
                +3.50 / +8.97%
             |             
            
                40.20
             |           
            
                42.50
             |               
            
                40.00
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                42.50
             |                                 
            
                51,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2008
             | 
            
                +1.00 / +2.63%
             |             
            
                38.00
             |           
            
                39.00
             |               
            
                38.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                12,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2008
             | 
            
                0.00 / 0.00%
             |             
            
                35.80
             |           
            
                38.00
             |               
            
                35.80
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                9,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2008
             | 
            
                +1.50 / +4.11%
             |             
            
                36.60
             |           
            
                38.20
             |               
            
                36.60
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2008
             | 
            
                -0.40 / -1.08%
             |             
            
                37.40
             |           
            
                39.00
             |               
            
                35.10
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                36.50
             |                                 
            
                30,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2008
             | 
            
                +0.30 / +0.82%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                34.20
             |                           
            
                36.90
             | 
            
                36.90
             |                     
            
                36.90
             |                                 
            
                9,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2008
             | 
            
                -2.40 / -6.15%
             |             
            
                35.80
             |           
            
                37.90
             |               
            
                35.80
             |                           
            
                36.60
             | 
            
                36.60
             |                     
            
                36.60
             |                                 
            
                7,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2008
             | 
            
                0.00 / 0.00%
             |             
            
                37.80
             |           
            
                39.10
             |               
            
                37.80
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                17,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2008
             | 
            
                +1.00 / +2.63%
             |             
            
                36.80
             |           
            
                40.00
             |               
            
                36.80
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                32,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2008
             | 
            
                -0.20 / -0.52%
             |             
            
                36.50
             |           
            
                40.00
             |               
            
                36.50
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                18,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2008
             | 
            
                +2.30 / +6.41%
             |             
            
                34.50
             |           
            
                38.20
             |               
            
                34.50
             |                           
            
                38.20
             | 
            
                38.20
             |                     
            
                38.20
             |                                 
            
                15,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2008
             | 
            
                -2.10 / -5.53%
             |             
            
                34.40
             |           
            
                37.00
             |               
            
                34.40
             |                           
            
                35.90
             | 
            
                35.90
             |                     
            
                35.90
             |                                 
            
                15,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2008
             | 
            
                -1.50 / -3.80%
             |             
            
                37.40
             |           
            
                41.50
             |               
            
                37.40
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                30,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2008
             | 
            
                -0.50 / -1.25%
             |             
            
                39.10
             |           
            
                42.40
             |               
            
                39.10
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                39.50
             |                                 
            
                22,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2008
             | 
            
                +1.90 / +4.99%
             |             
            
                39.00
             |           
            
                40.00
             |               
            
                39.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                40.00
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2008
             | 
            
                -0.90 / -2.31%
             |             
            
                38.00
             |           
            
                41.00
             |               
            
                38.00
             |                           
            
                38.10
             | 
            
                38.10
             |                     
            
                38.10
             |                                 
            
                17,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2008
             | 
            
                -0.10 / -0.26%
             |             
            
                36.00
             |           
            
                42.00
             |               
            
                36.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                30,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2008
             | 
            
                -3.40 / -8.00%
             |             
            
                38.03
             |           
            
                42.30
             |               
            
                38.00
             |                           
            
                39.10
             | 
            
                39.10
             |                     
            
                39.10
             |                                 
            
                20,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2008
             | 
            
                -0.50 / -1.16%
             |             
            
                41.30
             |           
            
                44.40
             |               
            
                41.30
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                42.50
             |                                 
            
                9,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2008
             | 
            
                -2.10 / -4.66%
             |             
            
                43.00
             |           
            
                45.50
             |               
            
                43.00
             |                           
            
                43.00
             | 
            
                43.00
             |                     
            
                43.00
             |                                 
            
                15,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2008
             | 
            
                -1.90 / -4.04%
             |             
            
                45.00
             |           
            
                48.00
             |               
            
                45.00
             |                           
            
                45.10
             | 
            
                45.10
             |                     
            
                45.10
             |                                 
            
                11,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2007
             | 
            
                +0.50 / +1.08%
             |             
            
                45.00
             |           
            
                49.00
             |               
            
                45.00
             |                           
            
                47.00
             | 
            
                47.00
             |                     
            
                47.00
             |                                 
            
                40,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2007
             | 
            
                -0.50 / -1.06%
             |             
            
                44.90
             |           
            
                48.40
             |               
            
                44.90
             |                           
            
                46.50
             | 
            
                46.50
             |                     
            
                46.50
             |                                 
            
                29,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/26/2007
             | 
            
                -0.40 / -0.84%
             |             
            
                43.20
             |           
            
                48.50
             |               
            
                43.20
             |                           
            
                47.00
             | 
            
                47.00
             |                     
            
                47.00
             |                                 
            
                49,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/25/2007
             | 
            
                -2.90 / -5.77%
             |             
            
                47.40
             |           
            
                51.90
             |               
            
                47.40
             |                           
            
                47.40
             | 
            
                47.40
             |                     
            
                47.40
             |                                 
            
                45,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2007
             | 
            
                -0.60 / -1.18%
             |             
            
                50.30
             |           
            
                55.30
             |               
            
                50.30
             |                           
            
                50.30
             | 
            
                50.30
             |                     
            
                50.30
             |                                 
            
                69,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2007
             | 
            
                +4.60 / +9.94%
             |             
            
                48.10
             |           
            
                50.90
             |               
            
                48.10
             |                           
            
                50.90
             | 
            
                50.90
             |                     
            
                50.90
             |                                 
            
                115,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2007
             | 
            
                +4.20 / +9.98%
             |             
            
                46.00
             |           
            
                46.30
             |               
            
                46.00
             |                           
            
                46.30
             | 
            
                46.30
             |                     
            
                46.30
             |                                 
            
                76,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2007
             | 
            
                +4.10 / +10.79%
             |             
            
                42.00
             |           
            
                42.10
             |               
            
                42.00
             |                           
            
                42.10
             | 
            
                42.10
             |                     
            
                42.10
             |                                 
            
                26,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2007
             | 
            
                -2.00 / -5.00%
             |             
            
                37.60
             |           
            
                41.00
             |               
            
                37.60
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                38,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |