| 
                 
                    Closing price on 6/14/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    68.40 | 
                 
                
                    | High | 
                    68.70 | 
                 
                
                    | Low | 
                    68.00 | 
                     
                
                    | Volume | 
                    8,000 | 
                                 
                
                    | Split-adjusted Price | 
                    3.42 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/14/2007
             | 
            
                0.00 / 0.00%
             |             
            
                68.40
             |           
            
                68.70
             |               
            
                68.00
             |                           
            
                68.50
             | 
            
                68.50
             |                     
            
                3.42
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2007
             | 
            
                -0.40 / -0.58%
             |             
            
                68.70
             |           
            
                69.30
             |               
            
                68.20
             |                           
            
                68.50
             | 
            
                68.50
             |                     
            
                3.42
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2007
             | 
            
                -0.50 / -0.72%
             |             
            
                68.90
             |           
            
                69.50
             |               
            
                68.50
             |                           
            
                68.90
             | 
            
                68.90
             |                     
            
                3.44
             |                                 
            
                9,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2007
             | 
            
                -0.10 / -0.14%
             |             
            
                69.60
             |           
            
                70.50
             |               
            
                69.00
             |                           
            
                69.40
             | 
            
                69.40
             |                     
            
                3.46
             |                                 
            
                6,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2007
             | 
            
                -1.30 / -1.84%
             |             
            
                70.00
             |           
            
                72.50
             |               
            
                69.20
             |                           
            
                69.50
             | 
            
                69.50
             |                     
            
                3.47
             |                                 
            
                8,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2007
             | 
            
                +0.30 / +0.43%
             |             
            
                70.70
             |           
            
                71.00
             |               
            
                70.70
             |                           
            
                70.80
             | 
            
                70.80
             |                     
            
                3.53
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2007
             | 
            
                +1.50 / +2.17%
             |             
            
                69.50
             |           
            
                70.50
             |               
            
                67.50
             |                           
            
                70.50
             | 
            
                70.50
             |                     
            
                3.52
             |                                 
            
                35,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2007
             | 
            
                -1.50 / -2.13%
             |             
            
                69.50
             |           
            
                71.00
             |               
            
                69.00
             |                           
            
                69.00
             | 
            
                69.00
             |                     
            
                3.44
             |                                 
            
                6,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2007
             | 
            
                -2.50 / -3.42%
             |             
            
                71.00
             |           
            
                72.50
             |               
            
                70.00
             |                           
            
                70.50
             | 
            
                70.50
             |                     
            
                3.52
             |                                 
            
                9,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2007
             | 
            
                +0.70 / +0.97%
             |             
            
                72.40
             |           
            
                73.20
             |               
            
                72.00
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                3.64
             |                                 
            
                12,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2007
             | 
            
                -1.70 / -2.30%
             |             
            
                73.20
             |           
            
                73.80
             |               
            
                72.00
             |                           
            
                72.30
             | 
            
                72.30
             |                     
            
                3.61
             |                                 
            
                5,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2007
             | 
            
                0.00 / 0.00%
             |             
            
                74.20
             |           
            
                75.00
             |               
            
                73.90
             |                           
            
                74.00
             | 
            
                74.00
             |                     
            
                3.69
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2007
             | 
            
                -1.00 / -1.33%
             |             
            
                74.10
             |           
            
                76.00
             |               
            
                74.00
             |                           
            
                74.00
             | 
            
                74.00
             |                     
            
                3.69
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2007
             | 
            
                +0.50 / +0.67%
             |             
            
                72.00
             |           
            
                76.00
             |               
            
                72.00
             |                           
            
                75.00
             | 
            
                75.00
             |                     
            
                3.74
             |                                 
            
                17,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2007
             | 
            
                +1.30 / +1.78%
             |             
            
                71.60
             |           
            
                74.50
             |               
            
                70.00
             |                           
            
                74.50
             | 
            
                74.50
             |                     
            
                3.72
             |                                 
            
                13,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2007
             | 
            
                -1.70 / -2.27%
             |             
            
                73.20
             |           
            
                76.00
             |               
            
                72.10
             |                           
            
                73.20
             | 
            
                73.20
             |                     
            
                3.65
             |                                 
            
                8,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2007
             | 
            
                -0.90 / -1.19%
             |             
            
                75.40
             |           
            
                78.00
             |               
            
                74.90
             |                           
            
                74.90
             | 
            
                74.90
             |                     
            
                3.74
             |                                 
            
                15,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2007
             | 
            
                +1.30 / +1.74%
             |             
            
                74.70
             |           
            
                77.00
             |               
            
                74.70
             |                           
            
                75.80
             | 
            
                75.80
             |                     
            
                3.78
             |                                 
            
                17,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2007
             | 
            
                +0.50 / +0.68%
             |             
            
                74.20
             |           
            
                75.00
             |               
            
                73.10
             |                           
            
                74.50
             | 
            
                74.50
             |                     
            
                3.72
             |                                 
            
                15,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2007
             | 
            
                -3.50 / -4.52%
             |             
            
                74.20
             |           
            
                75.00
             |               
            
                72.40
             |                           
            
                74.00
             | 
            
                74.00
             |                     
            
                3.69
             |                                 
            
                17,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2007
             | 
            
                +5.50 / +7.64%
             |             
            
                71.90
             |           
            
                77.50
             |               
            
                71.90
             |                           
            
                77.50
             | 
            
                77.50
             |                     
            
                3.87
             |                                 
            
                8,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2007
             | 
            
                0.00 / 0.00%
             |             
            
                71.90
             |           
            
                72.00
             |               
            
                71.50
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                3.59
             |                                 
            
                4,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2007
             | 
            
                -4.00 / -5.26%
             |             
            
                74.10
             |           
            
                78.90
             |               
            
                72.00
             |                           
            
                72.00
             | 
            
                72.00
             |                     
            
                3.59
             |                                 
            
                10,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2007
             | 
            
                +3.00 / +4.11%
             |             
            
                75.00
             |           
            
                78.50
             |               
            
                75.00
             |                           
            
                76.00
             | 
            
                76.00
             |                     
            
                3.79
             |                                 
            
                15,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2007
             | 
            
                +2.40 / +3.40%
             |             
            
                70.60
             |           
            
                75.00
             |               
            
                70.00
             |                           
            
                73.00
             | 
            
                73.00
             |                     
            
                3.64
             |                                 
            
                12,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2007
             | 
            
                -3.40 / -4.59%
             |             
            
                70.60
             |           
            
                75.50
             |               
            
                69.10
             |                           
            
                70.60
             | 
            
                70.60
             |                     
            
                3.52
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2007
             | 
            
                +3.50 / +4.96%
             |             
            
                70.40
             |           
            
                75.00
             |               
            
                70.00
             |                           
            
                74.00
             | 
            
                74.00
             |                     
            
                3.69
             |                                 
            
                26,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2007
             | 
            
                +2.00 / +2.92%
             |             
            
                69.00
             |           
            
                73.00
             |               
            
                69.00
             |                           
            
                70.50
             | 
            
                70.50
             |                     
            
                3.52
             |                                 
            
                14,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2007
             | 
            
                +4.90 / +7.70%
             |             
            
                66.00
             |           
            
                69.00
             |               
            
                66.00
             |                           
            
                68.50
             | 
            
                68.50
             |                     
            
                3.42
             |                                 
            
                31,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2007
             | 
            
                -0.50 / -0.78%
             |             
            
                63.60
             |           
            
                64.00
             |               
            
                63.00
             |                           
            
                63.60
             | 
            
                63.60
             |                     
            
                3.17
             |                                 
            
                7,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |