| 
                 
                    Closing price on 1/16/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    118.20 | 
                 
                
                    | High | 
                    119.00 | 
                 
                
                    | Low | 
                    118.20 | 
                     
                
                    | Volume | 
                    29,840 | 
                                 
                
                    | Split-adjusted Price | 
                    30.44 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/16/2017
             | 
            
                +0.70 / +0.59%
             |             
            
                118.20
             |           
            
                119.00
             |               
            
                118.20
             |                           
            
                118.80
             | 
            
                118.70
             |                     
            
                30.44
             |                                 
            
                29,840
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2017
             | 
            
                +0.50 / +0.43%
             |             
            
                119.30
             |           
            
                119.30
             |               
            
                117.60
             |                           
            
                118.10
             | 
            
                118.71
             |                     
            
                30.26
             |                                 
            
                21,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2017
             | 
            
                -1.30 / -1.09%
             |             
            
                118.00
             |           
            
                119.80
             |               
            
                111.00
             |                           
            
                117.60
             | 
            
                117.84
             |                     
            
                30.13
             |                                 
            
                34,930
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2017
             | 
            
                +1.40 / +1.19%
             |             
            
                117.50
             |           
            
                119.50
             |               
            
                117.50
             |                           
            
                118.90
             | 
            
                118.18
             |                     
            
                30.46
             |                                 
            
                114,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2017
             | 
            
                -0.10 / -0.09%
             |             
            
                117.50
             |           
            
                118.00
             |               
            
                117.30
             |                           
            
                117.50
             | 
            
                117.54
             |                     
            
                30.10
             |                                 
            
                10,830
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2017
             | 
            
                -1.90 / -1.59%
             |             
            
                119.50
             |           
            
                119.50
             |               
            
                117.60
             |                           
            
                117.60
             | 
            
                118.06
             |                     
            
                30.13
             |                                 
            
                93,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2017
             | 
            
                -0.50 / -0.42%
             |             
            
                119.30
             |           
            
                120.00
             |               
            
                119.20
             |                           
            
                119.50
             | 
            
                119.45
             |                     
            
                30.62
             |                                 
            
                7,970
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2017
             | 
            
                -1.00 / -0.83%
             |             
            
                121.40
             |           
            
                121.40
             |               
            
                119.30
             |                           
            
                120.00
             | 
            
                119.40
             |                     
            
                30.74
             |                                 
            
                35,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2017
             | 
            
                -0.10 / -0.08%
             |             
            
                122.60
             |           
            
                122.60
             |               
            
                119.30
             |                           
            
                121.00
             | 
            
                120.27
             |                     
            
                31.00
             |                                 
            
                18,750
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2017
             | 
            
                -2.40 / -1.94%
             |             
            
                121.50
             |           
            
                121.50
             |               
            
                121.10
             |                           
            
                121.10
             | 
            
                121.21
             |                     
            
                31.03
             |                                 
            
                5,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2016
             | 
            
                +4.50 / +3.78%
             |             
            
                119.80
             |           
            
                123.50
             |               
            
                119.10
             |                           
            
                123.50
             | 
            
                120.26
             |                     
            
                31.64
             |                                 
            
                30,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2016
             | 
            
                -2.50 / -2.06%
             |             
            
                121.80
             |           
            
                121.80
             |               
            
                118.90
             |                           
            
                119.00
             | 
            
                119.39
             |                     
            
                30.49
             |                                 
            
                48,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                121.90
             |           
            
                121.90
             |               
            
                121.10
             |                           
            
                121.50
             | 
            
                121.41
             |                     
            
                31.13
             |                                 
            
                7,160
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2016
             | 
            
                -0.50 / -0.41%
             |             
            
                122.00
             |           
            
                122.20
             |               
            
                121.50
             |                           
            
                121.50
             | 
            
                121.75
             |                     
            
                31.13
             |                                 
            
                32,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2016
             | 
            
                +0.40 / +0.33%
             |             
            
                121.40
             |           
            
                122.30
             |               
            
                121.40
             |                           
            
                122.00
             | 
            
                121.83
             |                     
            
                31.26
             |                                 
            
                17,410
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2016
             | 
            
                -1.00 / -0.82%
             |             
            
                122.60
             |           
            
                122.70
             |               
            
                121.60
             |                           
            
                121.60
             | 
            
                122.16
             |                     
            
                31.15
             |                                 
            
                30,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2016
             | 
            
                +1.20 / +0.99%
             |             
            
                120.00
             |           
            
                124.00
             |               
            
                120.00
             |                           
            
                122.60
             | 
            
                121.36
             |                     
            
                31.41
             |                                 
            
                14,280
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2016
             | 
            
                -0.60 / -0.49%
             |             
            
                122.00
             |           
            
                122.00
             |               
            
                120.50
             |                           
            
                121.40
             | 
            
                121.24
             |                     
            
                31.10
             |                                 
            
                28,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2016
             | 
            
                -2.00 / -1.61%
             |             
            
                124.00
             |           
            
                124.00
             |               
            
                121.90
             |                           
            
                122.00
             | 
            
                122.46
             |                     
            
                31.26
             |                                 
            
                12,910
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2016
             | 
            
                +1.10 / +0.90%
             |             
            
                124.00
             |           
            
                126.00
             |               
            
                123.50
             |                           
            
                124.00
             | 
            
                124.71
             |                     
            
                31.77
             |                                 
            
                89,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2016
             | 
            
                +5.10 / +4.33%
             |             
            
                118.50
             |           
            
                122.90
             |               
            
                118.50
             |                           
            
                122.90
             | 
            
                121.04
             |                     
            
                31.49
             |                                 
            
                142,030
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2016
             | 
            
                -0.20 / -0.17%
             |             
            
                117.90
             |           
            
                118.00
             |               
            
                117.60
             |                           
            
                117.80
             | 
            
                117.74
             |                     
            
                30.18
             |                                 
            
                15,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2016
             | 
            
                0.00 / 0.00%
             |             
            
                118.00
             |           
            
                118.00
             |               
            
                117.30
             |                           
            
                118.00
             | 
            
                117.52
             |                     
            
                30.23
             |                                 
            
                17,790
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2016
             | 
            
                +0.50 / +0.43%
             |             
            
                117.30
             |           
            
                118.70
             |               
            
                117.30
             |                           
            
                118.00
             | 
            
                118.10
             |                     
            
                30.23
             |                                 
            
                22,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2016
             | 
            
                -1.20 / -1.01%
             |             
            
                118.70
             |           
            
                118.70
             |               
            
                117.50
             |                           
            
                117.50
             | 
            
                117.85
             |                     
            
                30.10
             |                                 
            
                7,730
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2016
             | 
            
                +1.80 / +1.54%
             |             
            
                117.30
             |           
            
                118.70
             |               
            
                117.30
             |                           
            
                118.70
             | 
            
                118.44
             |                     
            
                30.41
             |                                 
            
                21,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2016
             | 
            
                +0.10 / +0.09%
             |             
            
                116.90
             |           
            
                117.50
             |               
            
                116.50
             |                           
            
                116.90
             | 
            
                116.86
             |                     
            
                29.95
             |                                 
            
                11,860
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2016
             | 
            
                0.00 / 0.00%
             |             
            
                118.00
             |           
            
                118.00
             |               
            
                116.70
             |                           
            
                116.80
             | 
            
                116.83
             |                     
            
                29.92
             |                                 
            
                23,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2016
             | 
            
                -1.50 / -1.27%
             |             
            
                117.60
             |           
            
                117.80
             |               
            
                116.80
             |                           
            
                116.80
             | 
            
                117.18
             |                     
            
                29.92
             |                                 
            
                30,030
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2016
             | 
            
                -0.20 / -0.17%
             |             
            
                119.20
             |           
            
                119.50
             |               
            
                117.50
             |                           
            
                118.30
             | 
            
                117.96
             |                     
            
                30.31
             |                                 
            
                22,610
             |  
            
                 
             |                                                              
             
    
         
    
    
 |