| 
                 
                    Closing price on 6/12/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.10 | 
                 
                
                    | High | 
                    17.80 | 
                 
                
                    | Low | 
                    17.00 | 
                     
                
                    | Volume | 
                    112,680 | 
                                 
                
                    | Split-adjusted Price | 
                    6.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PLC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/12/2013
             | 
            
                -1.60 / -8.47%
             |             
            
                17.10
             |           
            
                17.80
             |               
            
                17.00
             |                           
            
                17.30
             | 
            
                17.27
             |                     
            
                6.00
             |                                 
            
                112,680
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2013
             | 
            
                +0.10 / +0.53%
             |             
            
                18.70
             |           
            
                19.00
             |               
            
                18.60
             |                           
            
                18.90
             | 
            
                18.83
             |                     
            
                5.86
             |                                 
            
                108,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2013
             | 
            
                +0.30 / +1.62%
             |             
            
                18.70
             |           
            
                19.40
             |               
            
                18.60
             |                           
            
                18.80
             | 
            
                19.09
             |                     
            
                5.83
             |                                 
            
                348,857
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2013
             | 
            
                +0.30 / +1.65%
             |             
            
                18.20
             |           
            
                18.60
             |               
            
                17.70
             |                           
            
                18.50
             | 
            
                18.16
             |                     
            
                5.74
             |                                 
            
                206,384
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2013
             | 
            
                +0.70 / +4.00%
             |             
            
                17.50
             |           
            
                18.50
             |               
            
                17.40
             |                           
            
                18.20
             | 
            
                17.76
             |                     
            
                5.65
             |                                 
            
                93,193
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.20
             |                           
            
                17.50
             | 
            
                17.43
             |                     
            
                5.43
             |                                 
            
                44,325
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2013
             | 
            
                +0.20 / +1.16%
             |             
            
                17.40
             |           
            
                18.00
             |               
            
                17.30
             |                           
            
                17.50
             | 
            
                17.65
             |                     
            
                5.43
             |                                 
            
                124,147
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2013
             | 
            
                -0.20 / -1.14%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                17.20
             |                           
            
                17.30
             | 
            
                17.21
             |                     
            
                5.37
             |                                 
            
                63,572
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2013
             | 
            
                +0.50 / +2.94%
             |             
            
                17.30
             |           
            
                17.80
             |               
            
                17.10
             |                           
            
                17.50
             | 
            
                17.41
             |                     
            
                5.43
             |                                 
            
                122,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2013
             | 
            
                -0.40 / -2.30%
             |             
            
                17.40
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.25
             |                     
            
                5.27
             |                                 
            
                55,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2013
             | 
            
                -0.10 / -0.57%
             |             
            
                17.50
             |           
            
                18.00
             |               
            
                17.40
             |                           
            
                17.40
             | 
            
                17.69
             |                     
            
                5.40
             |                                 
            
                77,869
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                17.20
             |                           
            
                17.50
             | 
            
                17.39
             |                     
            
                5.43
             |                                 
            
                39,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2013
             | 
            
                +0.90 / +5.42%
             |             
            
                17.00
             |           
            
                17.80
             |               
            
                17.00
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                5.43
             |                                 
            
                295,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2013
             | 
            
                +0.10 / +0.61%
             |             
            
                16.60
             |           
            
                16.90
             |               
            
                16.40
             |                           
            
                16.60
             | 
            
                16.65
             |                     
            
                5.15
             |                                 
            
                35,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2013
             | 
            
                -0.40 / -2.37%
             |             
            
                16.70
             |           
            
                16.90
             |               
            
                16.20
             |                           
            
                16.50
             | 
            
                16.52
             |                     
            
                5.12
             |                                 
            
                56,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2013
             | 
            
                -0.10 / -0.59%
             |             
            
                17.00
             |           
            
                17.20
             |               
            
                16.90
             |                           
            
                16.90
             | 
            
                17.06
             |                     
            
                5.24
             |                                 
            
                17,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2013
             | 
            
                +0.10 / +0.59%
             |             
            
                17.00
             |           
            
                17.30
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.08
             |                     
            
                5.27
             |                                 
            
                72,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2013
             | 
            
                +0.10 / +0.60%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.70
             |                           
            
                16.90
             | 
            
                16.87
             |                     
            
                5.24
             |                                 
            
                42,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2013
             | 
            
                +0.20 / +1.20%
             |             
            
                16.60
             |           
            
                16.90
             |               
            
                16.60
             |                           
            
                16.80
             | 
            
                16.74
             |                     
            
                5.21
             |                                 
            
                29,770
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2013
             | 
            
                +0.10 / +0.61%
             |             
            
                16.70
             |           
            
                16.70
             |               
            
                16.50
             |                           
            
                16.60
             | 
            
                16.55
             |                     
            
                5.15
             |                                 
            
                45,503
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2013
             | 
            
                +0.10 / +0.61%
             |             
            
                16.40
             |           
            
                16.60
             |               
            
                16.40
             |                           
            
                16.50
             | 
            
                16.52
             |                     
            
                5.12
             |                                 
            
                36,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2013
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                16.40
             |               
            
                16.30
             |                           
            
                16.40
             | 
            
                16.33
             |                     
            
                5.09
             |                                 
            
                48,575
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2013
             | 
            
                +0.10 / +0.61%
             |             
            
                16.30
             |           
            
                16.40
             |               
            
                16.30
             |                           
            
                16.40
             | 
            
                16.38
             |                     
            
                5.09
             |                                 
            
                70,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2013
             | 
            
                -0.20 / -1.21%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                16.30
             |                           
            
                16.30
             | 
            
                16.34
             |                     
            
                5.06
             |                                 
            
                28,163
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                16.50
             |           
            
                16.60
             |               
            
                16.30
             |                           
            
                16.50
             | 
            
                16.49
             |                     
            
                5.12
             |                                 
            
                7,795
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2013
             | 
            
                +0.20 / +1.23%
             |             
            
                16.30
             |           
            
                16.50
             |               
            
                16.30
             |                           
            
                16.50
             | 
            
                16.35
             |                     
            
                5.12
             |                                 
            
                36,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2013
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                16.00
             |                           
            
                16.30
             | 
            
                16.19
             |                     
            
                5.06
             |                                 
            
                43,434
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                16.40
             |               
            
                16.10
             |                           
            
                16.30
             | 
            
                16.27
             |                     
            
                5.06
             |                                 
            
                24,867
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2013
             | 
            
                +0.30 / +1.88%
             |             
            
                16.00
             |           
            
                16.30
             |               
            
                16.00
             |                           
            
                16.30
             | 
            
                16.02
             |                     
            
                5.06
             |                                 
            
                13,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2013
             | 
            
                -0.10 / -0.62%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                4.96
             |                                 
            
                220,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |