| 
                 
                    Closing price on 5/30/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    81.00 | 
                 
                
                    | High | 
                    81.00 | 
                 
                
                    | Low | 
                    79.00 | 
                     
                
                    | Volume | 
                    29,260 | 
                                 
                
                    | Split-adjusted Price | 
                    30.09 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NNC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/30/2017
             | 
            
                -0.90 / -1.11%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                79.00
             |                           
            
                80.10
             | 
            
                80.04
             |                     
            
                30.09
             |                                 
            
                29,260
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2017
             | 
            
                +1.00 / +1.25%
             |             
            
                80.00
             |           
            
                81.90
             |               
            
                80.00
             |                           
            
                81.00
             | 
            
                80.78
             |                     
            
                30.43
             |                                 
            
                32,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2017
             | 
            
                +1.00 / +1.27%
             |             
            
                79.00
             |           
            
                80.00
             |               
            
                78.40
             |                           
            
                80.00
             | 
            
                79.46
             |                     
            
                30.05
             |                                 
            
                54,720
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2017
             | 
            
                +1.10 / +1.41%
             |             
            
                77.70
             |           
            
                79.50
             |               
            
                77.70
             |                           
            
                79.00
             | 
            
                78.05
             |                     
            
                29.67
             |                                 
            
                34,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2017
             | 
            
                -0.90 / -1.14%
             |             
            
                78.80
             |           
            
                78.80
             |               
            
                77.60
             |                           
            
                77.90
             | 
            
                77.85
             |                     
            
                29.26
             |                                 
            
                7,720
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2017
             | 
            
                -0.20 / -0.25%
             |             
            
                78.90
             |           
            
                78.90
             |               
            
                77.90
             |                           
            
                78.80
             | 
            
                78.26
             |                     
            
                29.60
             |                                 
            
                18,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2017
             | 
            
                -1.00 / -1.25%
             |             
            
                79.00
             |           
            
                79.90
             |               
            
                78.00
             |                           
            
                79.00
             | 
            
                78.21
             |                     
            
                29.67
             |                                 
            
                8,170
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2017
             | 
            
                +1.00 / +1.27%
             |             
            
                78.10
             |           
            
                80.00
             |               
            
                77.00
             |                           
            
                80.00
             | 
            
                78.89
             |                     
            
                30.05
             |                                 
            
                49,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2017
             | 
            
                -0.20 / -0.25%
             |             
            
                79.00
             |           
            
                79.00
             |               
            
                78.00
             |                           
            
                79.00
             | 
            
                78.49
             |                     
            
                29.67
             |                                 
            
                10,180
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                79.00
             |           
            
                79.60
             |               
            
                78.10
             |                           
            
                79.20
             | 
            
                78.89
             |                     
            
                29.75
             |                                 
            
                9,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2017
             | 
            
                -0.50 / -0.63%
             |             
            
                79.20
             |           
            
                80.00
             |               
            
                78.60
             |                           
            
                79.20
             | 
            
                79.52
             |                     
            
                29.75
             |                                 
            
                14,310
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2017
             | 
            
                -0.30 / -0.38%
             |             
            
                80.50
             |           
            
                81.00
             |               
            
                79.00
             |                           
            
                79.70
             | 
            
                79.36
             |                     
            
                29.94
             |                                 
            
                21,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2017
             | 
            
                +2.00 / +2.56%
             |             
            
                78.00
             |           
            
                80.00
             |               
            
                77.00
             |                           
            
                80.00
             | 
            
                78.71
             |                     
            
                30.05
             |                                 
            
                65,060
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2017
             | 
            
                -0.10 / -0.13%
             |             
            
                78.00
             |           
            
                78.00
             |               
            
                77.40
             |                           
            
                78.00
             | 
            
                77.53
             |                     
            
                29.30
             |                                 
            
                12,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2017
             | 
            
                +1.20 / +1.56%
             |             
            
                77.50
             |           
            
                78.50
             |               
            
                76.90
             |                           
            
                78.10
             | 
            
                77.32
             |                     
            
                29.34
             |                                 
            
                10,820
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2017
             | 
            
                -1.60 / -2.04%
             |             
            
                78.50
             |           
            
                78.50
             |               
            
                76.90
             |                           
            
                76.90
             | 
            
                77.22
             |                     
            
                28.89
             |                                 
            
                10,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2017
             | 
            
                -1.00 / -1.26%
             |             
            
                79.40
             |           
            
                79.40
             |               
            
                76.90
             |                           
            
                78.50
             | 
            
                77.67
             |                     
            
                29.49
             |                                 
            
                13,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2017
             | 
            
                +0.50 / +0.63%
             |             
            
                79.00
             |           
            
                79.50
             |               
            
                77.50
             |                           
            
                79.50
             | 
            
                78.84
             |                     
            
                29.86
             |                                 
            
                36,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2017
             | 
            
                +1.30 / +1.67%
             |             
            
                77.70
             |           
            
                79.00
             |               
            
                76.80
             |                           
            
                79.00
             | 
            
                78.25
             |                     
            
                29.67
             |                                 
            
                41,260
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2017
             | 
            
                -1.70 / -2.14%
             |             
            
                79.50
             |           
            
                79.50
             |               
            
                77.70
             |                           
            
                77.70
             | 
            
                78.22
             |                     
            
                29.19
             |                                 
            
                25,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2017
             | 
            
                +0.40 / +0.51%
             |             
            
                79.50
             |           
            
                80.00
             |               
            
                77.10
             |                           
            
                79.40
             | 
            
                78.69
             |                     
            
                29.82
             |                                 
            
                35,420
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2017
             | 
            
                +4.20 / +5.61%
             |             
            
                74.90
             |           
            
                79.00
             |               
            
                74.60
             |                           
            
                79.00
             | 
            
                76.46
             |                     
            
                29.67
             |                                 
            
                59,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2017
             | 
            
                +0.20 / +0.27%
             |             
            
                74.90
             |           
            
                75.50
             |               
            
                74.40
             |                           
            
                74.80
             | 
            
                74.76
             |                     
            
                28.10
             |                                 
            
                10,770
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2017
             | 
            
                +0.10 / +0.13%
             |             
            
                74.60
             |           
            
                74.60
             |               
            
                73.90
             |                           
            
                74.60
             | 
            
                74.34
             |                     
            
                28.02
             |                                 
            
                27,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2017
             | 
            
                -0.50 / -0.67%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                74.00
             |                           
            
                74.50
             | 
            
                74.35
             |                     
            
                27.98
             |                                 
            
                37,740
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2017
             | 
            
                +1.20 / +1.63%
             |             
            
                73.80
             |           
            
                75.00
             |               
            
                72.80
             |                           
            
                75.00
             | 
            
                73.82
             |                     
            
                28.17
             |                                 
            
                17,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2017
             | 
            
                +0.60 / +0.82%
             |             
            
                73.30
             |           
            
                73.80
             |               
            
                73.00
             |                           
            
                73.80
             | 
            
                73.38
             |                     
            
                27.72
             |                                 
            
                15,550
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2017
             | 
            
                -0.10 / -0.14%
             |             
            
                73.30
             |           
            
                73.30
             |               
            
                72.80
             |                           
            
                73.20
             | 
            
                73.22
             |                     
            
                27.50
             |                                 
            
                9,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2017
             | 
            
                +0.70 / +0.96%
             |             
            
                73.40
             |           
            
                73.40
             |               
            
                72.60
             |                           
            
                73.30
             | 
            
                73.19
             |                     
            
                27.53
             |                                 
            
                6,080
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2017
             | 
            
                -0.60 / -0.82%
             |             
            
                73.40
             |           
            
                73.60
             |               
            
                70.00
             |                           
            
                72.60
             | 
            
                72.89
             |                     
            
                27.27
             |                                 
            
                12,210
             |  
            
                 
             |                                                              
             
    
         
    
    
 |