| 
                 
                    Closing price on 4/14/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    41.00 | 
                 
                
                    | High | 
                    41.00 | 
                 
                
                    | Low | 
                    40.60 | 
                     
                
                    | Volume | 
                    1,700 | 
                                 
                
                    | Split-adjusted Price | 
                    5.97 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NHC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/14/2010
             | 
            
                -0.40 / -0.98%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                40.60
             |                           
            
                40.60
             | 
            
                40.60
             |                     
            
                5.97
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2010
             | 
            
                -2.30 / -5.31%
             |             
            
                41.00
             |           
            
                42.00
             |               
            
                41.00
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                6.03
             |                                 
            
                7,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2010
             | 
            
                +0.70 / +1.64%
             |             
            
                42.00
             |           
            
                43.70
             |               
            
                42.00
             |                           
            
                43.30
             | 
            
                43.30
             |                     
            
                6.37
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2010
             | 
            
                -1.00 / -2.29%
             |             
            
                42.40
             |           
            
                43.00
             |               
            
                42.40
             |                           
            
                42.60
             | 
            
                42.60
             |                     
            
                6.26
             |                                 
            
                7,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2010
             | 
            
                +2.60 / +6.34%
             |             
            
                40.00
             |           
            
                43.60
             |               
            
                40.00
             |                           
            
                43.60
             | 
            
                43.60
             |                     
            
                6.41
             |                                 
            
                17,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2010
             | 
            
                +0.50 / +1.23%
             |             
            
                40.60
             |           
            
                41.00
             |               
            
                40.60
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                6.03
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2010
             | 
            
                +1.10 / +2.79%
             |             
            
                39.50
             |           
            
                41.60
             |               
            
                39.50
             |                           
            
                40.50
             | 
            
                40.50
             |                     
            
                5.96
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2010
             | 
            
                +1.40 / +3.68%
             |             
            
                38.50
             |           
            
                39.40
             |               
            
                38.50
             |                           
            
                39.40
             | 
            
                39.40
             |                     
            
                5.79
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2010
             | 
            
                +1.20 / +3.26%
             |             
            
                39.30
             |           
            
                39.30
             |               
            
                37.60
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                5.59
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2010
             | 
            
                -1.00 / -2.65%
             |             
            
                36.80
             |           
            
                36.80
             |               
            
                36.80
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                5.41
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2010
             | 
            
                -0.70 / -1.82%
             |             
            
                37.00
             |           
            
                38.20
             |               
            
                37.00
             |                           
            
                37.80
             | 
            
                37.80
             |                     
            
                5.56
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2010
             | 
            
                -0.70 / -1.79%
             |             
            
                39.10
             |           
            
                39.30
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                5.66
             |                                 
            
                6,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2010
             | 
            
                +0.70 / +1.82%
             |             
            
                39.20
             |           
            
                39.20
             |               
            
                39.20
             |                           
            
                39.20
             | 
            
                39.20
             |                     
            
                5.76
             |                                 
            
                2,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2010
             | 
            
                +0.20 / +0.52%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                5.66
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2010
             | 
            
                -3.00 / -7.26%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                38.30
             |                           
            
                38.30
             | 
            
                38.30
             |                     
            
                5.63
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2010
             | 
            
                +2.40 / +6.17%
             |             
            
                39.10
             |           
            
                41.30
             |               
            
                39.00
             |                           
            
                41.30
             | 
            
                41.30
             |                     
            
                6.07
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2010
             | 
            
                -0.10 / -0.26%
             |             
            
                38.80
             |           
            
                38.90
             |               
            
                38.80
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                5.72
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2010
             | 
            
                -1.50 / -3.70%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                38.30
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                5.73
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2010
             | 
            
                -1.20 / -2.88%
             |             
            
                39.00
             |           
            
                40.50
             |               
            
                39.00
             |                           
            
                40.50
             | 
            
                40.50
             |                     
            
                5.96
             |                                 
            
                6,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2010
             | 
            
                +1.00 / +2.46%
             |             
            
                40.10
             |           
            
                41.70
             |               
            
                40.10
             |                           
            
                41.70
             | 
            
                41.70
             |                     
            
                6.13
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2010
             | 
            
                -1.30 / -3.10%
             |             
            
                40.50
             |           
            
                41.00
             |               
            
                40.50
             |                           
            
                40.70
             | 
            
                40.70
             |                     
            
                5.98
             |                                 
            
                2,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2010
             | 
            
                0.00 / 0.00%
             |             
            
                41.00
             |           
            
                42.00
             |               
            
                41.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                6.18
             |                                 
            
                6,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2010
             | 
            
                +0.40 / +0.96%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                6.18
             |                                 
            
                28,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2010
             | 
            
                +0.10 / +0.24%
             |             
            
                41.50
             |           
            
                41.60
             |               
            
                41.50
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                6.12
             |                                 
            
                5,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2010
             | 
            
                -1.50 / -3.49%
             |             
            
                42.10
             |           
            
                42.10
             |               
            
                41.50
             |                           
            
                41.50
             | 
            
                41.50
             |                     
            
                6.10
             |                                 
            
                13,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2010
             | 
            
                +1.00 / +2.38%
             |             
            
                42.00
             |           
            
                43.00
             |               
            
                42.00
             |                           
            
                43.00
             | 
            
                43.00
             |                     
            
                6.32
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                41.50
             |           
            
                42.00
             |               
            
                41.50
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                6.18
             |                                 
            
                6,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2010
             | 
            
                -1.00 / -2.33%
             |             
            
                41.00
             |           
            
                42.90
             |               
            
                40.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                6.18
             |                                 
            
                12,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2010
             | 
            
                -3.50 / -7.53%
             |             
            
                42.80
             |           
            
                45.00
             |               
            
                42.80
             |                           
            
                43.00
             | 
            
                43.00
             |                     
            
                6.32
             |                                 
            
                14,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2010
             | 
            
                +0.50 / +1.09%
             |             
            
                47.20
             |           
            
                47.20
             |               
            
                45.80
             |                           
            
                46.50
             | 
            
                46.50
             |                     
            
                6.32
             |                                 
            
                29,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |