| 
                 
                    Closing price on 10/4/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    74.90 | 
                 
                
                    | High | 
                    76.80 | 
                 
                
                    | Low | 
                    74.50 | 
                     
                
                    | Volume | 
                    49,500 | 
                                 
                
                    | Split-adjusted Price | 
                    32.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NTC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/4/2018
             | 
            
                +1.30 / +1.72%
             |             
            
                74.90
             |           
            
                76.80
             |               
            
                74.50
             |                           
            
                76.80
             | 
            
                75.93
             |                     
            
                32.30
             |                                 
            
                49,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2018
             | 
            
                +1.10 / +1.48%
             |             
            
                74.00
             |           
            
                76.00
             |               
            
                74.00
             |                           
            
                75.50
             | 
            
                75.00
             |                     
            
                31.75
             |                                 
            
                55,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2018
             | 
            
                0.00 / 0.00%
             |             
            
                74.00
             |           
            
                74.40
             |               
            
                73.80
             |                           
            
                74.40
             | 
            
                74.11
             |                     
            
                31.29
             |                                 
            
                19,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2018
             | 
            
                +0.80 / +1.09%
             |             
            
                74.30
             |           
            
                77.00
             |               
            
                73.50
             |                           
            
                74.40
             | 
            
                74.43
             |                     
            
                31.29
             |                                 
            
                139,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2018
             | 
            
                -0.30 / -0.41%
             |             
            
                73.30
             |           
            
                73.90
             |               
            
                73.20
             |                           
            
                73.20
             | 
            
                73.58
             |                     
            
                30.78
             |                                 
            
                39,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                73.70
             |           
            
                73.70
             |               
            
                72.80
             |                           
            
                73.50
             | 
            
                73.27
             |                     
            
                30.91
             |                                 
            
                65,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2018
             | 
            
                +1.20 / +1.66%
             |             
            
                72.00
             |           
            
                74.30
             |               
            
                72.00
             |                           
            
                73.50
             | 
            
                73.63
             |                     
            
                30.91
             |                                 
            
                161,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2018
             | 
            
                +1.30 / +1.83%
             |             
            
                72.00
             |           
            
                73.00
             |               
            
                71.10
             |                           
            
                72.30
             | 
            
                71.90
             |                     
            
                30.40
             |                                 
            
                37,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2018
             | 
            
                +0.80 / +1.14%
             |             
            
                70.30
             |           
            
                73.50
             |               
            
                70.30
             |                           
            
                71.00
             | 
            
                71.20
             |                     
            
                29.86
             |                                 
            
                163,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2018
             | 
            
                +0.20 / +0.28%
             |             
            
                70.90
             |           
            
                70.90
             |               
            
                69.60
             |                           
            
                70.50
             | 
            
                70.19
             |                     
            
                29.65
             |                                 
            
                37,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2018
             | 
            
                -0.70 / -0.99%
             |             
            
                70.00
             |           
            
                71.40
             |               
            
                70.00
             |                           
            
                70.30
             | 
            
                70.39
             |                     
            
                29.56
             |                                 
            
                48,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2018
             | 
            
                +0.50 / +0.71%
             |             
            
                70.00
             |           
            
                71.60
             |               
            
                70.00
             |                           
            
                71.00
             | 
            
                70.90
             |                     
            
                29.86
             |                                 
            
                71,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2018
             | 
            
                +1.50 / +2.17%
             |             
            
                69.90
             |           
            
                72.00
             |               
            
                69.80
             |                           
            
                70.50
             | 
            
                70.48
             |                     
            
                29.65
             |                                 
            
                77,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2018
             | 
            
                +4.20 / +6.48%
             |             
            
                68.00
             |           
            
                70.00
             |               
            
                67.00
             |                           
            
                69.00
             | 
            
                68.52
             |                     
            
                29.02
             |                                 
            
                86,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2018
             | 
            
                +3.60 / +5.71%
             |             
            
                64.20
             |           
            
                67.00
             |               
            
                63.00
             |                           
            
                66.60
             | 
            
                64.75
             |                     
            
                28.01
             |                                 
            
                57,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2018
             | 
            
                -0.60 / -0.94%
             |             
            
                63.90
             |           
            
                63.90
             |               
            
                62.70
             |                           
            
                63.00
             | 
            
                63.05
             |                     
            
                26.49
             |                                 
            
                24,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2018
             | 
            
                +0.60 / +0.95%
             |             
            
                63.50
             |           
            
                64.90
             |               
            
                63.00
             |                           
            
                63.60
             | 
            
                63.48
             |                     
            
                26.75
             |                                 
            
                38,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2018
             | 
            
                -0.30 / -0.47%
             |             
            
                62.80
             |           
            
                63.30
             |               
            
                62.50
             |                           
            
                63.00
             | 
            
                62.97
             |                     
            
                26.49
             |                                 
            
                28,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2018
             | 
            
                +0.30 / +0.48%
             |             
            
                63.10
             |           
            
                63.30
             |               
            
                62.50
             |                           
            
                63.30
             | 
            
                62.83
             |                     
            
                26.62
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2018
             | 
            
                0.00 / 0.00%
             |             
            
                63.80
             |           
            
                63.80
             |               
            
                62.70
             |                           
            
                63.00
             | 
            
                63.05
             |                     
            
                26.49
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2018
             | 
            
                +0.50 / +0.80%
             |             
            
                62.50
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                63.00
             | 
            
                62.44
             |                     
            
                26.49
             |                                 
            
                40,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2018
             | 
            
                -1.50 / -2.34%
             |             
            
                62.50
             |           
            
                63.80
             |               
            
                62.50
             |                           
            
                62.50
             | 
            
                62.99
             |                     
            
                26.28
             |                                 
            
                14,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2018
             | 
            
                -0.30 / -0.47%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                63.00
             |                           
            
                64.00
             | 
            
                63.45
             |                     
            
                26.91
             |                                 
            
                22,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2018
             | 
            
                -1.30 / -1.99%
             |             
            
                65.90
             |           
            
                65.90
             |               
            
                64.00
             |                           
            
                64.00
             | 
            
                64.25
             |                     
            
                26.91
             |                                 
            
                35,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2018
             | 
            
                +2.40 / +3.82%
             |             
            
                63.00
             |           
            
                65.30
             |               
            
                63.00
             |                           
            
                65.30
             | 
            
                64.22
             |                     
            
                27.46
             |                                 
            
                23,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2018
             | 
            
                +0.40 / +0.64%
             |             
            
                63.00
             |           
            
                63.50
             |               
            
                62.30
             |                           
            
                62.90
             | 
            
                62.77
             |                     
            
                26.45
             |                                 
            
                21,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2018
             | 
            
                +1.40 / +2.29%
             |             
            
                61.30
             |           
            
                63.00
             |               
            
                61.10
             |                           
            
                62.50
             | 
            
                62.25
             |                     
            
                26.28
             |                                 
            
                49,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2018
             | 
            
                -0.60 / -0.97%
             |             
            
                60.80
             |           
            
                61.50
             |               
            
                60.80
             |                           
            
                61.10
             | 
            
                61.26
             |                     
            
                25.69
             |                                 
            
                7,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2018
             | 
            
                -6.20 / -9.19%
             |             
            
                62.30
             |           
            
                62.30
             |               
            
                61.00
             |                           
            
                61.30
             | 
            
                61.69
             |                     
            
                25.78
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2018
             | 
            
                -0.20 / -0.30%
             |             
            
                68.00
             |           
            
                68.40
             |               
            
                67.50
             |                           
            
                67.50
             | 
            
                67.93
             |                     
            
                25.88
             |                                 
            
                32,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |