| 
                 
                    Closing price on 5/14/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    16.30 | 
                 
                
                    | High | 
                    16.40 | 
                 
                
                    | Low | 
                    16.30 | 
                     
                
                    | Volume | 
                    48,575 | 
                                 
                
                    | Split-adjusted Price | 
                    5.09 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PLC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2013
             | 
            
                +0.10 / +0.63%
             |             
            
                16.00
             |           
            
                16.10
             |               
            
                15.90
             |                           
            
                16.10
             | 
            
                16.00
             |                     
            
                4.99
             |                                 
            
                245,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2013
             | 
            
                +0.20 / +1.27%
             |             
            
                15.90
             |           
            
                16.00
             |               
            
                15.90
             |                           
            
                16.00
             | 
            
                15.95
             |                     
            
                4.96
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2013
             | 
            
                0.00 / 0.00%
             |             
            
                15.80
             |           
            
                15.90
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.87
             |                     
            
                4.90
             |                                 
            
                2,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.96
             |                     
            
                4.90
             |                                 
            
                7,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2013
             | 
            
                -0.10 / -0.63%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.70
             |                           
            
                15.80
             | 
            
                15.75
             |                     
            
                4.90
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2013
             | 
            
                -0.20 / -1.24%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.91
             |                     
            
                4.93
             |                                 
            
                10,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2013
             | 
            
                -0.10 / -0.62%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                15.80
             |                           
            
                16.10
             | 
            
                16.04
             |                     
            
                4.99
             |                                 
            
                13,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2013
             | 
            
                +0.30 / +1.89%
             |             
            
                15.80
             |           
            
                16.20
             |               
            
                15.60
             |                           
            
                16.20
             | 
            
                15.90
             |                     
            
                5.03
             |                                 
            
                33,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2013
             | 
            
                -0.50 / -3.05%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                16.12
             |                     
            
                4.93
             |                                 
            
                99,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2013
             | 
            
                -0.40 / -2.38%
             |             
            
                16.60
             |           
            
                16.80
             |               
            
                16.40
             |                           
            
                16.40
             | 
            
                16.58
             |                     
            
                5.09
             |                                 
            
                28,884
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2013
             | 
            
                +0.30 / +1.82%
             |             
            
                16.50
             |           
            
                16.90
             |               
            
                16.40
             |                           
            
                16.80
             | 
            
                16.67
             |                     
            
                5.21
             |                                 
            
                36,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2013
             | 
            
                +0.30 / +1.85%
             |             
            
                16.00
             |           
            
                17.30
             |               
            
                16.00
             |                           
            
                16.50
             | 
            
                16.47
             |                     
            
                5.12
             |                                 
            
                318,442
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2013
             | 
            
                -0.20 / -1.22%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                16.00
             |                           
            
                16.20
             | 
            
                16.05
             |                     
            
                5.03
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2013
             | 
            
                +0.50 / +3.14%
             |             
            
                16.20
             |           
            
                16.40
             |               
            
                16.20
             |                           
            
                16.40
             | 
            
                16.29
             |                     
            
                5.09
             |                                 
            
                1,060
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2013
             | 
            
                +0.10 / +0.63%
             |             
            
                15.80
             |           
            
                16.00
             |               
            
                15.70
             |                           
            
                15.90
             | 
            
                15.88
             |                     
            
                4.93
             |                                 
            
                6,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2013
             | 
            
                -0.10 / -0.63%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.82
             |                     
            
                4.90
             |                                 
            
                2,592
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2013
             | 
            
                -0.10 / -0.63%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.96
             |                     
            
                4.93
             |                                 
            
                34,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2013
             | 
            
                +0.30 / +1.91%
             |             
            
                16.00
             |           
            
                16.10
             |               
            
                15.90
             |                           
            
                16.00
             | 
            
                15.99
             |                     
            
                4.96
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2013
             | 
            
                -0.30 / -1.88%
             |             
            
                15.90
             |           
            
                16.00
             |               
            
                15.70
             |                           
            
                15.70
             | 
            
                15.90
             |                     
            
                4.87
             |                                 
            
                49,929
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2013
             | 
            
                +0.10 / +0.63%
             |             
            
                15.70
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                16.00
             | 
            
                15.85
             |                     
            
                4.96
             |                                 
            
                9,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                4.93
             |                                 
            
                29,392
             |  
            
                 
             |                                                              
             
    
         
    
    
 |