| 
                 
                    Closing price on 3/22/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    30.50 | 
                 
                
                    | High | 
                    31.60 | 
                 
                
                    | Low | 
                    30.50 | 
                     
                
                    | Volume | 
                    499,630 | 
                                 
                
                    | Split-adjusted Price | 
                    13.95 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NT2 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/22/2017
             | 
            
                +0.55 / +1.79%
             |             
            
                30.50
             |           
            
                31.60
             |               
            
                30.50
             |                           
            
                31.30
             | 
            
                31.35
             |                     
            
                13.95
             |                                 
            
                499,630
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2017
             | 
            
                -0.20 / -0.65%
             |             
            
                30.95
             |           
            
                31.30
             |               
            
                30.75
             |                           
            
                30.75
             | 
            
                30.98
             |                     
            
                13.70
             |                                 
            
                334,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2017
             | 
            
                +0.65 / +2.15%
             |             
            
                30.50
             |           
            
                30.95
             |               
            
                30.35
             |                           
            
                30.95
             | 
            
                30.73
             |                     
            
                13.79
             |                                 
            
                273,560
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                30.45
             |           
            
                30.50
             |               
            
                30.30
             |                           
            
                30.30
             | 
            
                30.31
             |                     
            
                13.50
             |                                 
            
                1,135,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2017
             | 
            
                +0.30 / +1.00%
             |             
            
                30.00
             |           
            
                30.50
             |               
            
                30.00
             |                           
            
                30.30
             | 
            
                30.34
             |                     
            
                13.50
             |                                 
            
                231,620
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2017
             | 
            
                +0.10 / +0.33%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                29.85
             |                           
            
                30.00
             | 
            
                29.92
             |                     
            
                13.37
             |                                 
            
                685,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2017
             | 
            
                -0.20 / -0.66%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                29.80
             |                           
            
                29.90
             | 
            
                29.88
             |                     
            
                13.32
             |                                 
            
                153,220
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2017
             | 
            
                +0.10 / +0.33%
             |             
            
                29.90
             |           
            
                30.20
             |               
            
                29.75
             |                           
            
                30.10
             | 
            
                29.91
             |                     
            
                13.41
             |                                 
            
                191,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2017
             | 
            
                +0.10 / +0.33%
             |             
            
                29.85
             |           
            
                30.20
             |               
            
                29.70
             |                           
            
                30.00
             | 
            
                29.94
             |                     
            
                13.37
             |                                 
            
                161,370
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2017
             | 
            
                -0.05 / -0.17%
             |             
            
                29.90
             |           
            
                30.00
             |               
            
                29.75
             |                           
            
                29.90
             | 
            
                29.89
             |                     
            
                13.32
             |                                 
            
                68,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2017
             | 
            
                +0.30 / +1.01%
             |             
            
                29.65
             |           
            
                30.10
             |               
            
                29.55
             |                           
            
                29.95
             | 
            
                29.80
             |                     
            
                13.35
             |                                 
            
                270,070
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2017
             | 
            
                -0.35 / -1.17%
             |             
            
                30.00
             |           
            
                30.10
             |               
            
                29.50
             |                           
            
                29.65
             | 
            
                29.66
             |                     
            
                13.21
             |                                 
            
                459,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2017
             | 
            
                +0.35 / +1.18%
             |             
            
                29.65
             |           
            
                30.10
             |               
            
                29.65
             |                           
            
                30.00
             | 
            
                29.95
             |                     
            
                13.37
             |                                 
            
                238,920
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2017
             | 
            
                -0.05 / -0.17%
             |             
            
                29.95
             |           
            
                29.95
             |               
            
                29.55
             |                           
            
                29.65
             | 
            
                29.63
             |                     
            
                13.21
             |                                 
            
                185,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2017
             | 
            
                +0.05 / +0.17%
             |             
            
                30.20
             |           
            
                30.20
             |               
            
                29.40
             |                           
            
                29.70
             | 
            
                29.67
             |                     
            
                13.23
             |                                 
            
                273,880
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2017
             | 
            
                +0.05 / +0.17%
             |             
            
                29.60
             |           
            
                30.20
             |               
            
                29.60
             |                           
            
                29.65
             | 
            
                29.85
             |                     
            
                13.21
             |                                 
            
                265,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2017
             | 
            
                -1.65 / -5.28%
             |             
            
                31.40
             |           
            
                31.40
             |               
            
                29.60
             |                           
            
                29.60
             | 
            
                30.39
             |                     
            
                13.19
             |                                 
            
                548,890
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2017
             | 
            
                -0.50 / -1.57%
             |             
            
                31.80
             |           
            
                31.80
             |               
            
                31.25
             |                           
            
                31.25
             | 
            
                31.47
             |                     
            
                13.92
             |                                 
            
                251,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2017
             | 
            
                -0.05 / -0.16%
             |             
            
                32.40
             |           
            
                32.40
             |               
            
                31.70
             |                           
            
                31.75
             | 
            
                32.06
             |                     
            
                14.15
             |                                 
            
                251,720
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2017
             | 
            
                +0.65 / +2.09%
             |             
            
                31.40
             |           
            
                32.50
             |               
            
                31.40
             |                           
            
                31.80
             | 
            
                31.97
             |                     
            
                14.17
             |                                 
            
                740,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2017
             | 
            
                -0.65 / -2.04%
             |             
            
                31.80
             |           
            
                31.80
             |               
            
                31.00
             |                           
            
                31.15
             | 
            
                31.39
             |                     
            
                13.88
             |                                 
            
                244,280
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2017
             | 
            
                -0.10 / -0.31%
             |             
            
                31.90
             |           
            
                32.00
             |               
            
                31.70
             |                           
            
                31.80
             | 
            
                31.77
             |                     
            
                14.17
             |                                 
            
                81,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2017
             | 
            
                +0.20 / +0.63%
             |             
            
                31.70
             |           
            
                31.95
             |               
            
                31.30
             |                           
            
                31.90
             | 
            
                31.72
             |                     
            
                14.21
             |                                 
            
                157,480
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2017
             | 
            
                +0.20 / +0.63%
             |             
            
                31.50
             |           
            
                31.80
             |               
            
                31.30
             |                           
            
                31.70
             | 
            
                31.58
             |                     
            
                14.12
             |                                 
            
                275,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2017
             | 
            
                +0.30 / +0.96%
             |             
            
                31.80
             |           
            
                32.00
             |               
            
                31.15
             |                           
            
                31.50
             | 
            
                31.58
             |                     
            
                14.04
             |                                 
            
                627,840
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2017
             | 
            
                -0.05 / -0.16%
             |             
            
                31.20
             |           
            
                31.40
             |               
            
                30.70
             |                           
            
                31.20
             | 
            
                31.05
             |                     
            
                13.90
             |                                 
            
                201,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2017
             | 
            
                -0.35 / -1.11%
             |             
            
                31.85
             |           
            
                31.85
             |               
            
                31.00
             |                           
            
                31.25
             | 
            
                31.33
             |                     
            
                13.92
             |                                 
            
                126,910
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2017
             | 
            
                +0.35 / +1.12%
             |             
            
                31.35
             |           
            
                32.00
             |               
            
                31.30
             |                           
            
                31.60
             | 
            
                31.73
             |                     
            
                14.08
             |                                 
            
                178,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2017
             | 
            
                +0.25 / +0.81%
             |             
            
                31.10
             |           
            
                31.40
             |               
            
                30.95
             |                           
            
                31.25
             | 
            
                31.20
             |                     
            
                13.92
             |                                 
            
                320,070
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                31.00
             |           
            
                31.20
             |               
            
                30.80
             |                           
            
                31.00
             | 
            
                31.05
             |                     
            
                13.81
             |                                 
            
                1,949,532
             |  
            
                 
             |                                                              
             
    
         
    
    
 |