| 
                 
                    Closing price on 3/20/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    50.00 | 
                 
                
                    | High | 
                    52.00 | 
                 
                
                    | Low | 
                    50.00 | 
                     
                
                    | Volume | 
                    10,480 | 
                                 
                
                    | Split-adjusted Price | 
                    36.27 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NNC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/20/2019
             | 
            
                -1.40 / -2.69%
             |             
            
                50.00
             |           
            
                52.00
             |               
            
                50.00
             |                           
            
                50.70
             | 
            
                50.57
             |                     
            
                36.27
             |                                 
            
                10,480
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2019
             | 
            
                -0.80 / -1.51%
             |             
            
                52.80
             |           
            
                52.90
             |               
            
                51.80
             |                           
            
                52.10
             | 
            
                52.06
             |                     
            
                37.28
             |                                 
            
                11,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2019
             | 
            
                +2.95 / +5.91%
             |             
            
                49.95
             |           
            
                52.90
             |               
            
                49.70
             |                           
            
                52.90
             | 
            
                50.57
             |                     
            
                37.85
             |                                 
            
                64,190
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2019
             | 
            
                +0.35 / +0.71%
             |             
            
                49.10
             |           
            
                50.00
             |               
            
                49.10
             |                           
            
                49.95
             | 
            
                49.85
             |                     
            
                35.74
             |                                 
            
                16,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2019
             | 
            
                +0.10 / +0.20%
             |             
            
                49.50
             |           
            
                50.40
             |               
            
                49.50
             |                           
            
                49.60
             | 
            
                49.70
             |                     
            
                35.49
             |                                 
            
                25,030
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2019
             | 
            
                0.00 / 0.00%
             |             
            
                49.50
             |           
            
                49.50
             |               
            
                49.40
             |                           
            
                49.50
             | 
            
                49.48
             |                     
            
                35.42
             |                                 
            
                8,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2019
             | 
            
                +0.45 / +0.92%
             |             
            
                49.05
             |           
            
                49.50
             |               
            
                49.00
             |                           
            
                49.50
             | 
            
                49.08
             |                     
            
                35.42
             |                                 
            
                41,930
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2019
             | 
            
                +0.05 / +0.10%
             |             
            
                49.00
             |           
            
                49.05
             |               
            
                48.65
             |                           
            
                49.05
             | 
            
                48.94
             |                     
            
                35.09
             |                                 
            
                13,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                48.90
             |           
            
                49.00
             |               
            
                48.80
             |                           
            
                49.00
             | 
            
                48.93
             |                     
            
                35.06
             |                                 
            
                10,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2019
             | 
            
                0.00 / 0.00%
             |             
            
                48.50
             |           
            
                49.00
             |               
            
                48.50
             |                           
            
                49.00
             | 
            
                48.78
             |                     
            
                35.06
             |                                 
            
                19,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                49.00
             |           
            
                49.00
             |               
            
                48.50
             |                           
            
                49.00
             | 
            
                48.59
             |                     
            
                35.06
             |                                 
            
                23,110
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2019
             | 
            
                -0.20 / -0.41%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                48.50
             |                           
            
                49.00
             | 
            
                48.79
             |                     
            
                35.06
             |                                 
            
                32,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2019
             | 
            
                -0.50 / -1.01%
             |             
            
                49.70
             |           
            
                49.70
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.40
             |                     
            
                35.20
             |                                 
            
                23,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2019
             | 
            
                +0.20 / +0.40%
             |             
            
                49.20
             |           
            
                49.70
             |               
            
                49.15
             |                           
            
                49.70
             | 
            
                49.31
             |                     
            
                35.56
             |                                 
            
                6,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2019
             | 
            
                -0.40 / -0.80%
             |             
            
                49.90
             |           
            
                49.90
             |               
            
                49.50
             |                           
            
                49.50
             | 
            
                49.70
             |                     
            
                35.42
             |                                 
            
                16,860
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2019
             | 
            
                -1.80 / -3.48%
             |             
            
                50.00
             |           
            
                50.40
             |               
            
                49.50
             |                           
            
                49.90
             | 
            
                49.86
             |                     
            
                35.70
             |                                 
            
                40,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2019
             | 
            
                +0.10 / +0.19%
             |             
            
                51.70
             |           
            
                51.70
             |               
            
                51.60
             |                           
            
                51.70
             | 
            
                51.61
             |                     
            
                35.56
             |                                 
            
                72,390
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2019
             | 
            
                -0.20 / -0.39%
             |             
            
                51.80
             |           
            
                51.80
             |               
            
                51.60
             |                           
            
                51.60
             | 
            
                51.72
             |                     
            
                35.49
             |                                 
            
                36,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2019
             | 
            
                0.00 / 0.00%
             |             
            
                51.80
             |           
            
                51.90
             |               
            
                51.80
             |                           
            
                51.80
             | 
            
                51.82
             |                     
            
                35.63
             |                                 
            
                60,860
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2019
             | 
            
                0.00 / 0.00%
             |             
            
                51.70
             |           
            
                51.80
             |               
            
                51.60
             |                           
            
                51.80
             | 
            
                51.70
             |                     
            
                35.63
             |                                 
            
                16,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2019
             | 
            
                -0.10 / -0.19%
             |             
            
                51.70
             |           
            
                51.90
             |               
            
                51.70
             |                           
            
                51.80
             | 
            
                51.75
             |                     
            
                35.63
             |                                 
            
                37,140
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2019
             | 
            
                -0.10 / -0.19%
             |             
            
                51.80
             |           
            
                51.90
             |               
            
                51.50
             |                           
            
                51.90
             | 
            
                51.70
             |                     
            
                35.70
             |                                 
            
                16,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2019
             | 
            
                +0.30 / +0.58%
             |             
            
                52.00
             |           
            
                52.30
             |               
            
                51.80
             |                           
            
                52.00
             | 
            
                51.93
             |                     
            
                35.77
             |                                 
            
                77,060
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2019
             | 
            
                -0.30 / -0.58%
             |             
            
                52.00
             |           
            
                52.00
             |               
            
                51.70
             |                           
            
                51.70
             | 
            
                51.84
             |                     
            
                35.56
             |                                 
            
                24,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2019
             | 
            
                -0.20 / -0.38%
             |             
            
                52.10
             |           
            
                52.10
             |               
            
                51.90
             |                           
            
                52.00
             | 
            
                52.04
             |                     
            
                35.77
             |                                 
            
                12,530
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2019
             | 
            
                +0.10 / +0.19%
             |             
            
                52.10
             |           
            
                52.40
             |               
            
                51.90
             |                           
            
                52.20
             | 
            
                52.18
             |                     
            
                35.90
             |                                 
            
                52,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2019
             | 
            
                +0.10 / +0.19%
             |             
            
                52.10
             |           
            
                52.10
             |               
            
                51.80
             |                           
            
                52.10
             | 
            
                51.99
             |                     
            
                35.83
             |                                 
            
                36,260
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2019
             | 
            
                -0.30 / -0.57%
             |             
            
                52.30
             |           
            
                52.50
             |               
            
                51.90
             |                           
            
                52.00
             | 
            
                52.17
             |                     
            
                35.77
             |                                 
            
                28,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2019
             | 
            
                +0.30 / +0.58%
             |             
            
                52.00
             |           
            
                52.50
             |               
            
                51.20
             |                           
            
                52.30
             | 
            
                52.02
             |                     
            
                35.97
             |                                 
            
                23,510
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2019
             | 
            
                +0.10 / +0.19%
             |             
            
                52.00
             |           
            
                52.00
             |               
            
                51.90
             |                           
            
                52.00
             | 
            
                51.97
             |                     
            
                35.77
             |                                 
            
                45,120
             |  
            
                 
             |                                                              
             
    
         
    
    
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