| 
                 
                    Closing price on 10/10/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    49.30 | 
                 
                
                    | High | 
                    49.40 | 
                 
                
                    | Low | 
                    49.00 | 
                     
                
                    | Volume | 
                    24,390 | 
                                 
                
                    | Split-adjusted Price | 
                    4.84 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NHC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/10/2007
             | 
            
                +1.10 / +2.30%
             |             
            
                49.30
             |           
            
                49.40
             |               
            
                49.00
             |                           
            
                49.00
             | 
            
                49.00
             |                     
            
                4.84
             |                                 
            
                24,390
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2007
             | 
            
                +2.20 / +4.81%
             |             
            
                47.90
             |           
            
                47.90
             |               
            
                47.80
             |                           
            
                47.90
             | 
            
                47.90
             |                     
            
                4.73
             |                                 
            
                14,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2007
             | 
            
                -2.30 / -4.79%
             |             
            
                45.60
             |           
            
                48.00
             |               
            
                45.60
             |                           
            
                45.70
             | 
            
                45.70
             |                     
            
                4.51
             |                                 
            
                11,820
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2007
             | 
            
                -2.50 / -4.95%
             |             
            
                48.00
             |           
            
                49.00
             |               
            
                48.00
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                4.74
             |                                 
            
                12,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2007
             | 
            
                +1.90 / +3.91%
             |             
            
                51.00
             |           
            
                51.00
             |               
            
                49.00
             |                           
            
                50.50
             | 
            
                50.50
             |                     
            
                4.99
             |                                 
            
                29,200
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2007
             | 
            
                +2.30 / +4.97%
             |             
            
                48.60
             |           
            
                48.60
             |               
            
                47.00
             |                           
            
                48.60
             | 
            
                48.60
             |                     
            
                4.80
             |                                 
            
                29,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2007
             | 
            
                +2.20 / +4.99%
             |             
            
                46.30
             |           
            
                46.30
             |               
            
                45.00
             |                           
            
                46.30
             | 
            
                46.30
             |                     
            
                4.57
             |                                 
            
                38,570
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2007
             | 
            
                +2.10 / +5.00%
             |             
            
                44.10
             |           
            
                44.10
             |               
            
                43.90
             |                           
            
                44.10
             | 
            
                44.10
             |                     
            
                4.36
             |                                 
            
                23,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2007
             | 
            
                -0.10 / -0.24%
             |             
            
                42.10
             |           
            
                42.10
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                4.15
             |                                 
            
                22,080
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2007
             | 
            
                -1.40 / -3.22%
             |             
            
                42.10
             |           
            
                42.30
             |               
            
                42.10
             |                           
            
                42.10
             | 
            
                42.10
             |                     
            
                4.16
             |                                 
            
                6,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2007
             | 
            
                0.00 / 0.00%
             |             
            
                44.90
             |           
            
                45.00
             |               
            
                43.50
             |                           
            
                43.50
             | 
            
                43.50
             |                     
            
                4.30
             |                                 
            
                5,250
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2007
             | 
            
                +1.00 / +2.35%
             |             
            
                44.00
             |           
            
                44.00
             |               
            
                43.50
             |                           
            
                43.50
             | 
            
                43.50
             |                     
            
                4.30
             |                                 
            
                5,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2007
             | 
            
                +0.50 / +1.19%
             |             
            
                41.80
             |           
            
                42.50
             |               
            
                41.80
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                4.20
             |                                 
            
                5,080
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2007
             | 
            
                -0.70 / -1.64%
             |             
            
                42.70
             |           
            
                42.70
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                4.15
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2007
             | 
            
                +0.60 / +1.43%
             |             
            
                43.00
             |           
            
                43.20
             |               
            
                42.00
             |                           
            
                42.70
             | 
            
                42.70
             |                     
            
                4.22
             |                                 
            
                7,250
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2007
             | 
            
                -0.40 / -0.94%
             |             
            
                41.70
             |           
            
                42.50
             |               
            
                41.70
             |                           
            
                42.10
             | 
            
                42.10
             |                     
            
                4.16
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2007
             | 
            
                +0.50 / +1.19%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                4.20
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2007
             | 
            
                -0.40 / -0.94%
             |             
            
                41.50
             |           
            
                42.00
             |               
            
                41.50
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                4.15
             |                                 
            
                2,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2007
             | 
            
                -0.80 / -1.85%
             |             
            
                42.00
             |           
            
                42.50
             |               
            
                41.90
             |                           
            
                42.40
             | 
            
                42.40
             |                     
            
                4.19
             |                                 
            
                5,280
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2007
             | 
            
                -1.80 / -4.00%
             |             
            
                44.00
             |           
            
                44.50
             |               
            
                43.20
             |                           
            
                43.20
             | 
            
                43.20
             |                     
            
                4.27
             |                                 
            
                3,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2007
             | 
            
                +1.50 / +3.45%
             |             
            
                45.60
             |           
            
                45.60
             |               
            
                44.90
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.44
             |                                 
            
                53,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2007
             | 
            
                +2.00 / +4.82%
             |             
            
                41.00
             |           
            
                43.50
             |               
            
                41.00
             |                           
            
                43.50
             | 
            
                43.50
             |                     
            
                4.30
             |                                 
            
                14,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2007
             | 
            
                +0.50 / +1.22%
             |             
            
                41.50
             |           
            
                41.50
             |               
            
                41.50
             |                           
            
                41.50
             | 
            
                41.50
             |                     
            
                4.10
             |                                 
            
                11,720
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2007
             | 
            
                0.00 / 0.00%
             |             
            
                40.10
             |           
            
                41.00
             |               
            
                40.10
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                4.05
             |                                 
            
                8,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2007
             | 
            
                +1.00 / +2.50%
             |             
            
                41.50
             |           
            
                41.50
             |               
            
                40.80
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                4.05
             |                                 
            
                1,540
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2007
             | 
            
                -1.00 / -2.44%
             |             
            
                40.50
             |           
            
                40.50
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                3.95
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2007
             | 
            
                +0.50 / +1.23%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                40.00
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                4.05
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2007
             | 
            
                +0.90 / +2.27%
             |             
            
                39.70
             |           
            
                40.50
             |               
            
                39.70
             |                           
            
                40.50
             | 
            
                40.50
             |                     
            
                4.00
             |                                 
            
                6,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2007
             | 
            
                +0.10 / +0.25%
             |             
            
                39.60
             |           
            
                39.60
             |               
            
                39.60
             |                           
            
                39.60
             | 
            
                39.60
             |                     
            
                3.91
             |                                 
            
                880
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2007
             | 
            
                +0.20 / +0.51%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                3.90
             |                                 
            
                1,730
             |  
            
                 
             |                                                              
             
    
         
    
    
 |