| 
                 
                    Closing price on 10/8/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    110.30 | 
                 
                
                    | High | 
                    110.50 | 
                 
                
                    | Low | 
                    110.30 | 
                     
                
                    | Volume | 
                    4,800 | 
                                 
                
                    | Split-adjusted Price | 
                    18.64 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DTC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/8/2008
             | 
            
                -8.20 / -6.92%
             |             
            
                110.30
             |           
            
                110.50
             |               
            
                110.30
             |                           
            
                110.30
             | 
            
                110.30
             |                     
            
                18.64
             |                                 
            
                4,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2008
             | 
            
                -5.50 / -4.44%
             |             
            
                118.50
             |           
            
                118.50
             |               
            
                118.50
             |                           
            
                118.50
             | 
            
                118.50
             |                     
            
                20.03
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2008
             | 
            
                -7.40 / -5.63%
             |             
            
                122.30
             |           
            
                139.50
             |               
            
                122.30
             |                           
            
                124.00
             | 
            
                127.40
             |                     
            
                20.96
             |                                 
            
                11,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2008
             | 
            
                +7.90 / +6.35%
             |             
            
                132.00
             |           
            
                132.40
             |               
            
                127.00
             |                           
            
                132.40
             | 
            
                130.95
             |                     
            
                22.37
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2008
             | 
            
                +7.30 / +6.23%
             |             
            
                124.50
             |           
            
                124.50
             |               
            
                120.00
             |                           
            
                124.50
             | 
            
                123.90
             |                     
            
                21.04
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2008
             | 
            
                +7.60 / +6.93%
             |             
            
                117.20
             |           
            
                117.20
             |               
            
                111.00
             |                           
            
                117.20
             | 
            
                116.40
             |                     
            
                19.81
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2008
             | 
            
                -8.20 / -6.96%
             |             
            
                109.60
             |           
            
                109.60
             |               
            
                109.60
             |                           
            
                109.60
             | 
            
                109.60
             |                     
            
                18.52
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2008
             | 
            
                +7.70 / +6.99%
             |             
            
                117.80
             |           
            
                117.80
             |               
            
                117.80
             |                           
            
                117.80
             | 
            
                117.80
             |                     
            
                19.91
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2008
             | 
            
                +7.20 / +6.94%
             |             
            
                111.00
             |           
            
                111.00
             |               
            
                104.00
             |                           
            
                111.00
             | 
            
                109.25
             |                     
            
                18.76
             |                                 
            
                6,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2008
             | 
            
                +7.00 / +7.23%
             |             
            
                103.70
             |           
            
                103.80
             |               
            
                103.70
             |                           
            
                103.80
             | 
            
                103.80
             |                     
            
                17.54
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2008
             | 
            
                -3.20 / -3.20%
             |             
            
                98.00
             |           
            
                98.10
             |               
            
                96.80
             |                           
            
                96.80
             | 
            
                97.10
             |                     
            
                16.36
             |                                 
            
                3,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2008
             | 
            
                -5.30 / -5.03%
             |             
            
                103.00
             |           
            
                108.00
             |               
            
                99.00
             |                           
            
                100.00
             | 
            
                104.00
             |                     
            
                16.90
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2008
             | 
            
                +6.80 / +6.90%
             |             
            
                105.30
             |           
            
                105.30
             |               
            
                105.30
             |                           
            
                105.30
             | 
            
                105.30
             |                     
            
                17.80
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2008
             | 
            
                +6.70 / +6.91%
             |             
            
                90.30
             |           
            
                103.70
             |               
            
                90.30
             |                           
            
                103.70
             | 
            
                97.00
             |                     
            
                17.52
             |                                 
            
                7,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2008
             | 
            
                -4.00 / -3.96%
             |             
            
                97.00
             |           
            
                97.00
             |               
            
                97.00
             |                           
            
                97.00
             | 
            
                97.00
             |                     
            
                16.39
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2008
             | 
            
                -4.00 / -3.81%
             |             
            
                109.00
             |           
            
                109.00
             |               
            
                101.00
             |                           
            
                101.00
             | 
            
                104.20
             |                     
            
                17.07
             |                                 
            
                5,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2008
             | 
            
                -4.00 / -3.67%
             |             
            
                118.50
             |           
            
                118.50
             |               
            
                105.00
             |                           
            
                105.00
             | 
            
                108.50
             |                     
            
                17.74
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2008
             | 
            
                +5.20 / +5.01%
             |             
            
                111.00
             |           
            
                111.00
             |               
            
                109.00
             |                           
            
                109.00
             | 
            
                110.80
             |                     
            
                18.42
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2008
             | 
            
                -6.50 / -5.91%
             |             
            
                104.00
             |           
            
                108.00
             |               
            
                102.10
             |                           
            
                103.50
             | 
            
                104.40
             |                     
            
                17.49
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2008
             | 
            
                +7.70 / +7.53%
             |             
            
                112.00
             |           
            
                112.00
             |               
            
                103.00
             |                           
            
                110.00
             | 
            
                108.50
             |                     
            
                18.59
             |                                 
            
                6,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2008
             | 
            
                -3.70 / -3.49%
             |             
            
                106.00
             |           
            
                109.40
             |               
            
                100.00
             |                           
            
                102.30
             | 
            
                104.70
             |                     
            
                17.29
             |                                 
            
                15,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2008
             | 
            
                -2.10 / -1.94%
             |             
            
                100.60
             |           
            
                109.00
             |               
            
                100.60
             |                           
            
                106.00
             | 
            
                102.30
             |                     
            
                17.91
             |                                 
            
                9,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2008
             | 
            
                -8.10 / -6.97%
             |             
            
                108.10
             |           
            
                108.10
             |               
            
                108.10
             |                           
            
                108.10
             | 
            
                108.10
             |                     
            
                18.27
             |                                 
            
                3,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2008
             | 
            
                -8.70 / -6.97%
             |             
            
                116.20
             |           
            
                116.20
             |               
            
                116.20
             |                           
            
                116.20
             | 
            
                116.20
             |                     
            
                19.64
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2008
             | 
            
                -8.10 / -6.09%
             |             
            
                125.00
             |           
            
                125.00
             |               
            
                124.90
             |                           
            
                124.90
             | 
            
                124.90
             |                     
            
                21.11
             |                                 
            
                5,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2008
             | 
            
                -10.00 / -6.99%
             |             
            
                133.00
             |           
            
                150.00
             |               
            
                133.00
             |                           
            
                133.00
             | 
            
                134.30
             |                     
            
                22.48
             |                                 
            
                16,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2008
             | 
            
                -10.70 / -6.96%
             |             
            
                143.00
             |           
            
                143.00
             |               
            
                143.00
             |                           
            
                143.00
             | 
            
                143.00
             |                     
            
                24.17
             |                                 
            
                5,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2008
             | 
            
                -7.40 / -4.59%
             |             
            
                153.70
             |           
            
                153.70
             |               
            
                153.70
             |                           
            
                153.70
             | 
            
                153.70
             |                     
            
                25.97
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2008
             | 
            
                -12.10 / -6.99%
             |             
            
                184.80
             |           
            
                184.80
             |               
            
                161.10
             |                           
            
                161.10
             | 
            
                165.20
             |                     
            
                27.23
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2008
             | 
            
                +11.30 / +6.98%
             |             
            
                173.20
             |           
            
                173.20
             |               
            
                173.10
             |                           
            
                173.20
             | 
            
                173.20
             |                     
            
                29.27
             |                                 
            
                13,400
             |  
            
                 
             |                                                              
             
    
         
    
    
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