| 
                 
                    Closing price on 3/25/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    28.00 | 
                 
                
                    | High | 
                    28.00 | 
                 
                
                    | Low | 
                    27.50 | 
                     
                
                    | Volume | 
                    9,200 | 
                                 
                
                    | Split-adjusted Price | 
                    4.82 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NHC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/25/2011
             | 
            
                -0.20 / -0.71%
             |             
            
                28.00
             |           
            
                28.00
             |               
            
                27.50
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                4.82
             |                                 
            
                9,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2011
             | 
            
                -0.30 / -1.05%
             |             
            
                28.40
             |           
            
                28.40
             |               
            
                28.20
             |                           
            
                28.20
             | 
            
                28.20
             |                     
            
                4.86
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.91
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.91
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.91
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2011
             | 
            
                +0.50 / +1.79%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.91
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2011
             | 
            
                0.00 / 0.00%
             |             
            
                27.00
             |           
            
                28.00
             |               
            
                27.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                4.82
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                28.00
             |           
            
                28.00
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                4.82
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2011
             | 
            
                -0.50 / -1.75%
             |             
            
                28.00
             |           
            
                28.00
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                4.82
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2011
             | 
            
                -1.50 / -5.00%
             |             
            
                28.10
             |           
            
                28.50
             |               
            
                27.90
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                4.91
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2011
             | 
            
                -3.00 / -9.09%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                5.17
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2011
             | 
            
                +1.40 / +4.43%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                5.08
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2011
             | 
            
                +0.10 / +0.32%
             |             
            
                32.00
             |           
            
                32.10
             |               
            
                31.60
             |                           
            
                31.60
             | 
            
                31.60
             |                     
            
                4.87
             |                                 
            
                4,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2011
             | 
            
                +0.50 / +1.61%
             |             
            
                31.60
             |           
            
                31.80
             |               
            
                31.50
             |                           
            
                31.50
             | 
            
                31.50
             |                     
            
                4.85
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                31.50
             |           
            
                31.80
             |               
            
                30.60
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                4.77
             |                                 
            
                3,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2011
             | 
            
                -0.10 / -0.32%
             |             
            
                29.90
             |           
            
                31.00
             |               
            
                29.90
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                4.77
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/3/2011
             | 
            
                -0.80 / -2.51%
             |             
            
                31.30
             |           
            
                31.30
             |               
            
                31.00
             |                           
            
                31.10
             | 
            
                31.10
             |                     
            
                4.79
             |                                 
            
                3,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2011
             | 
            
                -2.40 / -7.00%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                31.90
             |                           
            
                31.90
             | 
            
                31.90
             |                     
            
                4.91
             |                                 
            
                8,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2011
             | 
            
                +0.80 / +2.39%
             |             
            
                34.30
             |           
            
                34.30
             |               
            
                34.30
             |                           
            
                34.30
             | 
            
                34.30
             |                     
            
                5.28
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2011
             | 
            
                -1.10 / -3.18%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                33.50
             |                           
            
                33.50
             | 
            
                33.50
             |                     
            
                5.16
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2011
             | 
            
                +1.60 / +4.85%
             |             
            
                34.70
             |           
            
                34.70
             |               
            
                34.50
             |                           
            
                34.60
             | 
            
                34.60
             |                     
            
                5.33
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2011
             | 
            
                +1.00 / +3.13%
             |             
            
                32.00
             |           
            
                33.00
             |               
            
                32.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                5.08
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                4.93
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2011
             | 
            
                -0.70 / -2.14%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                4.93
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2011
             | 
            
                -0.50 / -1.51%
             |             
            
                32.70
             |           
            
                32.70
             |               
            
                32.70
             |                           
            
                32.70
             | 
            
                32.70
             |                     
            
                5.04
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2011
             | 
            
                +0.20 / +0.61%
             |             
            
                32.80
             |           
            
                33.20
             |               
            
                32.50
             |                           
            
                33.20
             | 
            
                33.20
             |                     
            
                5.11
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/17/2011
             | 
            
                -0.50 / -1.49%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                5.08
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/16/2011
             | 
            
                -0.50 / -1.47%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                33.50
             |                           
            
                33.50
             | 
            
                33.50
             |                     
            
                5.16
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2011
             | 
            
                -1.50 / -4.23%
             |             
            
                34.10
             |           
            
                34.10
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                5.24
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                5.47
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |