| 
                 
                    Closing price on 6/8/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    28.20 | 
                 
                
                    | High | 
                    28.40 | 
                 
                
                    | Low | 
                    28.10 | 
                     
                
                    | Volume | 
                    125,240 | 
                                 
                
                    | Split-adjusted Price | 
                    17.23 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NAF Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/8/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.20
             |           
            
                28.40
             |               
            
                28.10
             |                           
            
                28.20
             | 
            
                28.26
             |                     
            
                17.23
             |                                 
            
                125,240
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2016
             | 
            
                +0.10 / +0.36%
             |             
            
                28.20
             |           
            
                28.30
             |               
            
                28.10
             |                           
            
                28.20
             | 
            
                28.21
             |                     
            
                17.23
             |                                 
            
                134,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2016
             | 
            
                -0.10 / -0.35%
             |             
            
                28.20
             |           
            
                28.30
             |               
            
                28.00
             |                           
            
                28.10
             | 
            
                28.16
             |                     
            
                17.17
             |                                 
            
                144,330
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.20
             |           
            
                28.30
             |               
            
                28.10
             |                           
            
                28.20
             | 
            
                28.22
             |                     
            
                17.23
             |                                 
            
                123,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2016
             | 
            
                -0.20 / -0.70%
             |             
            
                28.30
             |           
            
                28.40
             |               
            
                28.10
             |                           
            
                28.20
             | 
            
                28.25
             |                     
            
                17.23
             |                                 
            
                130,780
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.40
             |           
            
                28.50
             |               
            
                28.20
             |                           
            
                28.40
             | 
            
                28.36
             |                     
            
                17.36
             |                                 
            
                157,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.40
             |           
            
                28.40
             |               
            
                28.20
             |                           
            
                28.40
             | 
            
                28.32
             |                     
            
                17.36
             |                                 
            
                131,460
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2016
             | 
            
                +0.10 / +0.35%
             |             
            
                28.30
             |           
            
                28.60
             |               
            
                28.20
             |                           
            
                28.40
             | 
            
                28.36
             |                     
            
                17.36
             |                                 
            
                144,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.30
             |           
            
                28.50
             |               
            
                28.10
             |                           
            
                28.30
             | 
            
                28.32
             |                     
            
                17.29
             |                                 
            
                137,170
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2016
             | 
            
                -0.70 / -2.41%
             |             
            
                28.90
             |           
            
                29.10
             |               
            
                28.10
             |                           
            
                28.30
             | 
            
                28.68
             |                     
            
                17.29
             |                                 
            
                133,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.00
             |           
            
                29.20
             |               
            
                28.90
             |                           
            
                29.00
             | 
            
                29.05
             |                     
            
                17.72
             |                                 
            
                153,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2016
             | 
            
                +0.10 / +0.35%
             |             
            
                28.90
             |           
            
                29.00
             |               
            
                28.80
             |                           
            
                29.00
             | 
            
                28.89
             |                     
            
                17.72
             |                                 
            
                128,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                28.80
             |           
            
                29.00
             |               
            
                28.80
             |                           
            
                28.90
             | 
            
                28.89
             |                     
            
                17.66
             |                                 
            
                142,930
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                29.00
             |           
            
                29.10
             |               
            
                28.90
             |                           
            
                29.00
             | 
            
                29.02
             |                     
            
                17.72
             |                                 
            
                148,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.00
             |           
            
                29.20
             |               
            
                29.00
             |                           
            
                29.10
             | 
            
                29.09
             |                     
            
                17.78
             |                                 
            
                136,060
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                29.00
             |           
            
                29.30
             |               
            
                29.00
             |                           
            
                29.10
             | 
            
                29.20
             |                     
            
                17.78
             |                                 
            
                147,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.10
             |           
            
                29.40
             |               
            
                29.10
             |                           
            
                29.20
             | 
            
                29.25
             |                     
            
                17.84
             |                                 
            
                147,080
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.20
             |           
            
                29.30
             |               
            
                29.00
             |                           
            
                29.20
             | 
            
                29.19
             |                     
            
                17.84
             |                                 
            
                150,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2016
             | 
            
                -0.20 / -0.68%
             |             
            
                29.40
             |           
            
                29.50
             |               
            
                29.20
             |                           
            
                29.20
             | 
            
                29.29
             |                     
            
                17.84
             |                                 
            
                144,640
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2016
             | 
            
                -0.10 / -0.34%
             |             
            
                29.60
             |           
            
                29.70
             |               
            
                29.40
             |                           
            
                29.40
             | 
            
                29.55
             |                     
            
                17.97
             |                                 
            
                141,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.50
             |           
            
                29.60
             |               
            
                29.40
             |                           
            
                29.50
             | 
            
                29.50
             |                     
            
                18.03
             |                                 
            
                143,690
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                29.30
             |                           
            
                29.50
             | 
            
                29.42
             |                     
            
                18.03
             |                                 
            
                158,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2016
             | 
            
                -0.30 / -1.01%
             |             
            
                29.70
             |           
            
                29.90
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                29.68
             |                     
            
                18.03
             |                                 
            
                156,150
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2016
             | 
            
                +0.20 / +0.68%
             |             
            
                29.60
             |           
            
                29.90
             |               
            
                29.50
             |                           
            
                29.80
             | 
            
                29.74
             |                     
            
                18.21
             |                                 
            
                161,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2016
             | 
            
                +0.10 / +0.34%
             |             
            
                29.50
             |           
            
                29.70
             |               
            
                29.50
             |                           
            
                29.60
             | 
            
                29.62
             |                     
            
                18.09
             |                                 
            
                186,020
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2016
             | 
            
                -0.20 / -0.67%
             |             
            
                29.70
             |           
            
                29.70
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                29.60
             |                     
            
                18.03
             |                                 
            
                120,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.60
             |           
            
                29.90
             |               
            
                29.60
             |                           
            
                29.70
             | 
            
                29.76
             |                     
            
                18.15
             |                                 
            
                152,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                29.60
             |           
            
                29.80
             |               
            
                29.60
             |                           
            
                29.70
             | 
            
                29.67
             |                     
            
                18.15
             |                                 
            
                206,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2016
             | 
            
                -0.20 / -0.67%
             |             
            
                29.80
             |           
            
                29.90
             |               
            
                29.60
             |                           
            
                29.70
             | 
            
                29.72
             |                     
            
                18.15
             |                                 
            
                153,210
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2016
             | 
            
                +0.20 / +0.67%
             |             
            
                29.70
             |           
            
                30.00
             |               
            
                29.50
             |                           
            
                29.90
             | 
            
                29.77
             |                     
            
                18.27
             |                                 
            
                171,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |