| 
                 
                    Closing price on 5/31/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    31.30 | 
                 
                
                    | High | 
                    31.70 | 
                 
                
                    | Low | 
                    31.20 | 
                     
                
                    | Volume | 
                    967,070 | 
                                 
                
                    | Split-adjusted Price | 
                    13.25 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NT2 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                31.30
             |           
            
                31.70
             |               
            
                31.20
             |                           
            
                31.60
             | 
            
                31.51
             |                     
            
                13.25
             |                                 
            
                967,070
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2016
             | 
            
                +1.00 / +3.27%
             |             
            
                30.40
             |           
            
                31.80
             |               
            
                30.40
             |                           
            
                31.60
             | 
            
                31.35
             |                     
            
                13.25
             |                                 
            
                514,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2016
             | 
            
                -0.10 / -0.33%
             |             
            
                30.70
             |           
            
                30.90
             |               
            
                30.60
             |                           
            
                30.60
             | 
            
                30.73
             |                     
            
                12.83
             |                                 
            
                159,050
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2016
             | 
            
                -1.10 / -3.46%
             |             
            
                31.80
             |           
            
                31.80
             |               
            
                30.70
             |                           
            
                30.70
             | 
            
                31.17
             |                     
            
                12.88
             |                                 
            
                320,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2016
             | 
            
                +0.70 / +2.25%
             |             
            
                31.40
             |           
            
                31.90
             |               
            
                31.20
             |                           
            
                31.80
             | 
            
                31.57
             |                     
            
                13.34
             |                                 
            
                565,770
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2016
             | 
            
                +0.70 / +2.30%
             |             
            
                30.40
             |           
            
                31.40
             |               
            
                30.40
             |                           
            
                31.10
             | 
            
                31.00
             |                     
            
                13.04
             |                                 
            
                944,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2016
             | 
            
                +0.30 / +1.00%
             |             
            
                30.10
             |           
            
                30.40
             |               
            
                30.10
             |                           
            
                30.40
             | 
            
                30.25
             |                     
            
                12.75
             |                                 
            
                513,260
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2016
             | 
            
                +0.10 / +0.33%
             |             
            
                29.80
             |           
            
                30.20
             |               
            
                29.80
             |                           
            
                30.10
             | 
            
                30.06
             |                     
            
                12.63
             |                                 
            
                365,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2016
             | 
            
                -0.10 / -0.33%
             |             
            
                30.10
             |           
            
                30.20
             |               
            
                29.80
             |                           
            
                30.00
             | 
            
                30.02
             |                     
            
                12.58
             |                                 
            
                310,670
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2016
             | 
            
                +0.30 / +1.01%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                29.60
             |                           
            
                30.10
             | 
            
                29.83
             |                     
            
                12.63
             |                                 
            
                426,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2016
             | 
            
                -0.30 / -1.00%
             |             
            
                30.10
             |           
            
                30.40
             |               
            
                29.80
             |                           
            
                29.80
             | 
            
                29.97
             |                     
            
                12.50
             |                                 
            
                384,980
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2016
             | 
            
                +0.30 / +1.01%
             |             
            
                30.20
             |           
            
                30.30
             |               
            
                29.80
             |                           
            
                30.10
             | 
            
                30.06
             |                     
            
                12.63
             |                                 
            
                175,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2016
             | 
            
                -0.70 / -2.30%
             |             
            
                30.40
             |           
            
                30.40
             |               
            
                29.80
             |                           
            
                29.80
             | 
            
                30.14
             |                     
            
                12.50
             |                                 
            
                240,760
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2016
             | 
            
                +0.40 / +1.33%
             |             
            
                30.00
             |           
            
                30.70
             |               
            
                30.00
             |                           
            
                30.50
             | 
            
                30.31
             |                     
            
                12.79
             |                                 
            
                723,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2016
             | 
            
                +0.10 / +0.33%
             |             
            
                30.10
             |           
            
                30.20
             |               
            
                29.90
             |                           
            
                30.10
             | 
            
                30.02
             |                     
            
                12.63
             |                                 
            
                342,280
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2016
             | 
            
                +0.40 / +1.35%
             |             
            
                29.20
             |           
            
                30.10
             |               
            
                29.20
             |                           
            
                30.00
             | 
            
                29.79
             |                     
            
                12.58
             |                                 
            
                286,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2016
             | 
            
                +0.60 / +2.07%
             |             
            
                29.20
             |           
            
                30.40
             |               
            
                29.00
             |                           
            
                29.60
             | 
            
                29.78
             |                     
            
                12.42
             |                                 
            
                555,280
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2016
             | 
            
                +0.10 / +0.35%
             |             
            
                28.80
             |           
            
                29.20
             |               
            
                28.80
             |                           
            
                29.00
             | 
            
                29.01
             |                     
            
                12.16
             |                                 
            
                263,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                29.00
             |           
            
                29.10
             |               
            
                28.70
             |                           
            
                28.90
             | 
            
                28.88
             |                     
            
                12.12
             |                                 
            
                471,630
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2016
             | 
            
                -0.50 / -1.69%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                28.90
             |                           
            
                29.00
             | 
            
                29.09
             |                     
            
                12.16
             |                                 
            
                389,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2016
             | 
            
                +1.10 / +3.87%
             |             
            
                28.40
             |           
            
                29.70
             |               
            
                28.40
             |                           
            
                29.50
             | 
            
                29.32
             |                     
            
                12.37
             |                                 
            
                730,930
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2016
             | 
            
                -0.30 / -1.05%
             |             
            
                28.60
             |           
            
                28.80
             |               
            
                28.40
             |                           
            
                28.40
             | 
            
                28.51
             |                     
            
                11.91
             |                                 
            
                319,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2016
             | 
            
                -0.60 / -2.05%
             |             
            
                29.10
             |           
            
                29.10
             |               
            
                28.60
             |                           
            
                28.70
             | 
            
                28.80
             |                     
            
                12.04
             |                                 
            
                450,180
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                29.40
             |           
            
                29.40
             |               
            
                28.70
             |                           
            
                29.30
             | 
            
                29.01
             |                     
            
                12.29
             |                                 
            
                399,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2016
             | 
            
                +0.60 / +2.08%
             |             
            
                28.90
             |           
            
                29.70
             |               
            
                28.90
             |                           
            
                29.40
             | 
            
                29.28
             |                     
            
                12.33
             |                                 
            
                559,250
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2016
             | 
            
                -0.70 / -2.37%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                28.50
             |                           
            
                28.80
             | 
            
                28.87
             |                     
            
                12.08
             |                                 
            
                1,675,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2016
             | 
            
                -1.10 / -3.59%
             |             
            
                30.60
             |           
            
                30.60
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                29.84
             |                     
            
                12.37
             |                                 
            
                665,630
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2016
             | 
            
                -2.00 / -6.13%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                30.00
             |                           
            
                30.60
             | 
            
                30.44
             |                     
            
                12.83
             |                                 
            
                488,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2016
             | 
            
                -0.60 / -1.81%
             |             
            
                33.30
             |           
            
                33.60
             |               
            
                32.50
             |                           
            
                32.60
             | 
            
                32.96
             |                     
            
                12.62
             |                                 
            
                683,030
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2016
             | 
            
                -0.70 / -2.06%
             |             
            
                33.80
             |           
            
                34.20
             |               
            
                33.20
             |                           
            
                33.20
             | 
            
                33.61
             |                     
            
                12.86
             |                                 
            
                600,690
             |  
            
                 
             |                                                              
             
    
         
    
    
 |