| 
                 
                    Closing price on 1/20/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    76.50 | 
                 
                
                    | High | 
                    76.50 | 
                 
                
                    | Low | 
                    74.50 | 
                     
                
                    | Volume | 
                    20,070 | 
                                 
                
                    | Split-adjusted Price | 
                    13.84 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/20/2016
             | 
            
                0.00 / 0.00%
             |             
            
                76.50
             |           
            
                76.50
             |               
            
                74.50
             |                           
            
                76.00
             | 
            
                75.42
             |                     
            
                13.84
             |                                 
            
                20,070
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2016
             | 
            
                +1.50 / +2.01%
             |             
            
                74.00
             |           
            
                76.00
             |               
            
                74.00
             |                           
            
                76.00
             | 
            
                75.06
             |                     
            
                13.84
             |                                 
            
                11,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2016
             | 
            
                +1.50 / +2.05%
             |             
            
                72.50
             |           
            
                78.00
             |               
            
                72.00
             |                           
            
                74.50
             | 
            
                73.73
             |                     
            
                13.57
             |                                 
            
                51,140
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2016
             | 
            
                -1.00 / -1.35%
             |             
            
                74.00
             |           
            
                74.00
             |               
            
                73.00
             |                           
            
                73.00
             | 
            
                73.14
             |                     
            
                13.30
             |                                 
            
                17,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2016
             | 
            
                -1.50 / -1.99%
             |             
            
                74.50
             |           
            
                74.50
             |               
            
                72.50
             |                           
            
                74.00
             | 
            
                73.58
             |                     
            
                13.48
             |                                 
            
                35,870
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2016
             | 
            
                -0.50 / -0.66%
             |             
            
                76.00
             |           
            
                76.00
             |               
            
                75.50
             |                           
            
                75.50
             | 
            
                75.90
             |                     
            
                13.75
             |                                 
            
                32,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2016
             | 
            
                0.00 / 0.00%
             |             
            
                76.00
             |           
            
                76.00
             |               
            
                75.00
             |                           
            
                76.00
             | 
            
                75.83
             |                     
            
                13.84
             |                                 
            
                19,820
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2016
             | 
            
                -2.00 / -2.56%
             |             
            
                77.50
             |           
            
                78.00
             |               
            
                76.00
             |                           
            
                76.00
             | 
            
                76.97
             |                     
            
                13.84
             |                                 
            
                35,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2016
             | 
            
                +0.50 / +0.65%
             |             
            
                77.00
             |           
            
                78.50
             |               
            
                77.00
             |                           
            
                78.00
             | 
            
                77.54
             |                     
            
                14.21
             |                                 
            
                13,270
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2016
             | 
            
                -1.00 / -1.27%
             |             
            
                78.00
             |           
            
                79.00
             |               
            
                76.50
             |                           
            
                77.50
             | 
            
                77.59
             |                     
            
                14.12
             |                                 
            
                97,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2016
             | 
            
                +0.50 / +0.64%
             |             
            
                78.00
             |           
            
                78.50
             |               
            
                77.00
             |                           
            
                78.50
             | 
            
                78.01
             |                     
            
                14.30
             |                                 
            
                41,970
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2016
             | 
            
                -0.50 / -0.64%
             |             
            
                77.50
             |           
            
                78.50
             |               
            
                77.50
             |                           
            
                78.00
             | 
            
                78.07
             |                     
            
                14.21
             |                                 
            
                42,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2016
             | 
            
                0.00 / 0.00%
             |             
            
                78.50
             |           
            
                79.50
             |               
            
                78.00
             |                           
            
                78.50
             | 
            
                78.46
             |                     
            
                14.30
             |                                 
            
                49,010
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2015
             | 
            
                0.00 / 0.00%
             |             
            
                78.00
             |           
            
                79.00
             |               
            
                77.50
             |                           
            
                78.50
             | 
            
                78.31
             |                     
            
                14.30
             |                                 
            
                50,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2015
             | 
            
                0.00 / 0.00%
             |             
            
                77.50
             |           
            
                78.50
             |               
            
                77.50
             |                           
            
                78.50
             | 
            
                77.88
             |                     
            
                14.30
             |                                 
            
                19,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2015
             | 
            
                +1.50 / +1.95%
             |             
            
                76.00
             |           
            
                81.00
             |               
            
                76.00
             |                           
            
                78.50
             | 
            
                77.29
             |                     
            
                14.30
             |                                 
            
                20,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2015
             | 
            
                0.00 / 0.00%
             |             
            
                77.00
             |           
            
                77.50
             |               
            
                76.00
             |                           
            
                77.00
             | 
            
                76.86
             |                     
            
                14.03
             |                                 
            
                57,650
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2015
             | 
            
                0.00 / 0.00%
             |             
            
                77.00
             |           
            
                77.50
             |               
            
                76.50
             |                           
            
                77.00
             | 
            
                76.91
             |                     
            
                14.03
             |                                 
            
                13,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2015
             | 
            
                0.00 / 0.00%
             |             
            
                75.50
             |           
            
                77.00
             |               
            
                75.50
             |                           
            
                77.00
             | 
            
                76.62
             |                     
            
                14.03
             |                                 
            
                20,870
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2015
             | 
            
                0.00 / 0.00%
             |             
            
                76.00
             |           
            
                77.00
             |               
            
                74.50
             |                           
            
                77.00
             | 
            
                75.36
             |                     
            
                14.03
             |                                 
            
                85,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2015
             | 
            
                0.00 / 0.00%
             |             
            
                75.50
             |           
            
                78.00
             |               
            
                75.50
             |                           
            
                77.00
             | 
            
                76.44
             |                     
            
                14.03
             |                                 
            
                16,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2015
             | 
            
                -1.00 / -1.28%
             |             
            
                78.00
             |           
            
                78.00
             |               
            
                76.50
             |                           
            
                77.00
             | 
            
                76.59
             |                     
            
                14.03
             |                                 
            
                23,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2015
             | 
            
                +3.00 / +4.00%
             |             
            
                75.00
             |           
            
                79.50
             |               
            
                74.50
             |                           
            
                78.00
             | 
            
                77.31
             |                     
            
                14.21
             |                                 
            
                88,680
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2015
             | 
            
                0.00 / 0.00%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                73.50
             |                           
            
                75.00
             | 
            
                74.46
             |                     
            
                13.66
             |                                 
            
                27,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2015
             | 
            
                +1.00 / +1.35%
             |             
            
                74.50
             |           
            
                75.00
             |               
            
                73.50
             |                           
            
                75.00
             | 
            
                74.20
             |                     
            
                13.66
             |                                 
            
                60,340
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2015
             | 
            
                0.00 / 0.00%
             |             
            
                74.00
             |           
            
                74.50
             |               
            
                73.50
             |                           
            
                74.00
             | 
            
                74.07
             |                     
            
                13.48
             |                                 
            
                21,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2015
             | 
            
                -0.50 / -0.67%
             |             
            
                74.50
             |           
            
                74.50
             |               
            
                73.50
             |                           
            
                74.00
             | 
            
                74.17
             |                     
            
                13.48
             |                                 
            
                11,730
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2015
             | 
            
                +2.00 / +2.76%
             |             
            
                72.50
             |           
            
                75.50
             |               
            
                72.50
             |                           
            
                74.50
             | 
            
                74.43
             |                     
            
                13.57
             |                                 
            
                73,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2015
             | 
            
                -1.50 / -2.03%
             |             
            
                73.50
             |           
            
                74.50
             |               
            
                72.50
             |                           
            
                72.50
             | 
            
                73.33
             |                     
            
                13.21
             |                                 
            
                34,420
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2015
             | 
            
                -1.00 / -1.33%
             |             
            
                76.00
             |           
            
                76.00
             |               
            
                74.00
             |                           
            
                74.00
             | 
            
                74.77
             |                     
            
                13.48
             |                                 
            
                38,370
             |  
            
                 
             |                                                              
             
    
         
    
    
 |