| 
                 
                    Closing price on 8/21/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    56.00 | 
                 
                
                    | High | 
                    56.80 | 
                 
                
                    | Low | 
                    55.70 | 
                     
                
                    | Volume | 
                    24,010 | 
                                 
                
                    | Split-adjusted Price | 
                    27.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NNC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/21/2017
             | 
            
                -1.20 / -2.11%
             |             
            
                56.00
             |           
            
                56.80
             |               
            
                55.70
             |                           
            
                55.70
             | 
            
                55.94
             |                     
            
                27.90
             |                                 
            
                24,010
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2017
             | 
            
                +0.70 / +1.25%
             |             
            
                56.50
             |           
            
                56.90
             |               
            
                55.90
             |                           
            
                56.90
             | 
            
                56.36
             |                     
            
                28.50
             |                                 
            
                12,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2017
             | 
            
                -0.80 / -1.40%
             |             
            
                57.00
             |           
            
                57.00
             |               
            
                56.20
             |                           
            
                56.20
             | 
            
                56.36
             |                     
            
                28.15
             |                                 
            
                4,720
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2017
             | 
            
                0.00 / 0.00%
             |             
            
                57.00
             |           
            
                57.20
             |               
            
                56.10
             |                           
            
                57.00
             | 
            
                56.81
             |                     
            
                28.55
             |                                 
            
                16,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2017
             | 
            
                +0.30 / +0.53%
             |             
            
                56.70
             |           
            
                57.00
             |               
            
                55.90
             |                           
            
                57.00
             | 
            
                56.33
             |                     
            
                28.55
             |                                 
            
                11,130
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2017
             | 
            
                -0.10 / -0.18%
             |             
            
                56.00
             |           
            
                57.00
             |               
            
                55.80
             |                           
            
                56.70
             | 
            
                55.97
             |                     
            
                28.40
             |                                 
            
                11,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                56.70
             |           
            
                56.80
             |               
            
                56.00
             |                           
            
                56.80
             | 
            
                56.20
             |                     
            
                28.45
             |                                 
            
                8,150
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2017
             | 
            
                -0.20 / -0.35%
             |             
            
                56.50
             |           
            
                57.00
             |               
            
                55.50
             |                           
            
                56.80
             | 
            
                56.40
             |                     
            
                28.45
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                54.00
             |                           
            
                57.00
             | 
            
                56.15
             |                     
            
                28.55
             |                                 
            
                25,430
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2017
             | 
            
                -0.90 / -1.55%
             |             
            
                57.30
             |           
            
                57.70
             |               
            
                56.60
             |                           
            
                57.00
             | 
            
                56.87
             |                     
            
                28.55
             |                                 
            
                13,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2017
             | 
            
                +0.40 / +0.70%
             |             
            
                56.60
             |           
            
                57.90
             |               
            
                56.60
             |                           
            
                57.90
             | 
            
                57.18
             |                     
            
                29.00
             |                                 
            
                4,040
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2017
             | 
            
                -0.20 / -0.35%
             |             
            
                57.00
             |           
            
                57.70
             |               
            
                56.50
             |                           
            
                57.50
             | 
            
                56.93
             |                     
            
                28.80
             |                                 
            
                28,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2017
             | 
            
                -0.20 / -0.35%
             |             
            
                57.10
             |           
            
                57.90
             |               
            
                56.70
             |                           
            
                57.70
             | 
            
                57.12
             |                     
            
                28.90
             |                                 
            
                24,580
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2017
             | 
            
                -0.10 / -0.17%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                57.10
             |                           
            
                57.90
             | 
            
                57.58
             |                     
            
                29.00
             |                                 
            
                26,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2017
             | 
            
                -0.80 / -1.36%
             |             
            
                58.80
             |           
            
                58.80
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.08
             |                     
            
                29.05
             |                                 
            
                52,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2017
             | 
            
                0.00 / 0.00%
             |             
            
                58.90
             |           
            
                58.90
             |               
            
                58.00
             |                           
            
                58.80
             | 
            
                58.48
             |                     
            
                29.45
             |                                 
            
                17,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2017
             | 
            
                +0.40 / +0.68%
             |             
            
                59.00
             |           
            
                59.00
             |               
            
                58.40
             |                           
            
                58.80
             | 
            
                58.55
             |                     
            
                29.45
             |                                 
            
                3,450
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2017
             | 
            
                +1.00 / +1.74%
             |             
            
                59.50
             |           
            
                59.50
             |               
            
                57.50
             |                           
            
                58.40
             | 
            
                58.17
             |                     
            
                29.25
             |                                 
            
                10,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2017
             | 
            
                +0.70 / +1.23%
             |             
            
                57.20
             |           
            
                57.40
             |               
            
                56.80
             |                           
            
                57.40
             | 
            
                56.89
             |                     
            
                28.75
             |                                 
            
                27,510
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2017
             | 
            
                -0.80 / -1.39%
             |             
            
                57.50
             |           
            
                58.90
             |               
            
                56.60
             |                           
            
                56.70
             | 
            
                57.11
             |                     
            
                28.40
             |                                 
            
                20,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2017
             | 
            
                -0.80 / -1.37%
             |             
            
                58.80
             |           
            
                58.80
             |               
            
                57.50
             |                           
            
                57.50
             | 
            
                58.10
             |                     
            
                28.80
             |                                 
            
                8,090
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2017
             | 
            
                0.00 / 0.00%
             |             
            
                58.40
             |           
            
                58.50
             |               
            
                58.00
             |                           
            
                58.30
             | 
            
                58.29
             |                     
            
                29.20
             |                                 
            
                6,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2017
             | 
            
                -0.20 / -0.34%
             |             
            
                58.50
             |           
            
                58.50
             |               
            
                57.50
             |                           
            
                58.30
             | 
            
                57.94
             |                     
            
                29.20
             |                                 
            
                25,890
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2017
             | 
            
                -1.20 / -2.01%
             |             
            
                58.60
             |           
            
                58.70
             |               
            
                58.30
             |                           
            
                58.50
             | 
            
                58.40
             |                     
            
                29.30
             |                                 
            
                8,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2017
             | 
            
                +0.20 / +0.34%
             |             
            
                59.00
             |           
            
                60.00
             |               
            
                58.30
             |                           
            
                59.70
             | 
            
                59.07
             |                     
            
                29.90
             |                                 
            
                14,170
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2017
             | 
            
                -0.50 / -0.83%
             |             
            
                59.00
             |           
            
                59.80
             |               
            
                58.20
             |                           
            
                59.50
             | 
            
                58.84
             |                     
            
                29.80
             |                                 
            
                11,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                59.90
             |           
            
                60.00
             |               
            
                58.90
             |                           
            
                60.00
             | 
            
                59.85
             |                     
            
                30.05
             |                                 
            
                11,830
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2017
             | 
            
                -0.40 / -0.66%
             |             
            
                60.40
             |           
            
                60.50
             |               
            
                59.00
             |                           
            
                60.00
             | 
            
                59.57
             |                     
            
                30.05
             |                                 
            
                11,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2017
             | 
            
                +0.40 / +0.67%
             |             
            
                60.50
             |           
            
                60.50
             |               
            
                59.60
             |                           
            
                60.40
             | 
            
                60.08
             |                     
            
                30.25
             |                                 
            
                19,590
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                59.70
             |           
            
                60.00
             |               
            
                58.30
             |                           
            
                60.00
             | 
            
                59.11
             |                     
            
                30.05
             |                                 
            
                18,220
             |  
            
                 
             |                                                              
             
    
         
    
    
 |