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                    Closing price on 3/20/2013
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        |           
                
                    | Open | 15.90 |  
                    | High | 16.10 |  
                    | Low | 15.90 |  
                    | Volume | 18,900 |  
                    | Split-adjusted Price | 4.99 |  
                
             | 
 |  PLC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/20/2013 | +0.10 / +0.63% | 15.90 | 16.10 | 15.90 | 16.10 | 15.94 | 4.99 | 18,900 |   |  
            | 3/19/2013 | 0.00 / 0.00% | 16.00 | 16.10 | 15.90 | 16.00 | 15.99 | 4.96 | 34,900 |   |  			
            | 3/18/2013 | -0.20 / -1.23% | 16.10 | 16.10 | 15.90 | 16.00 | 15.97 | 4.96 | 13,300 |   |  
            | 3/15/2013 | +0.30 / +1.89% | 15.90 | 16.20 | 15.90 | 16.20 | 16.01 | 5.03 | 19,900 |   |  			
            | 3/14/2013 | -0.10 / -0.63% | 15.90 | 15.90 | 15.80 | 15.90 | 15.86 | 4.93 | 7,500 |   |  
            | 3/13/2013 | 0.00 / 0.00% | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 4.96 | 5,000 |   |  			
            | 3/12/2013 | -0.20 / -1.23% | 16.00 | 16.00 | 15.90 | 16.00 | 15.95 | 4.96 | 16,919 |   |  
            | 3/11/2013 | +0.10 / +0.62% | 16.20 | 16.20 | 16.00 | 16.20 | 16.14 | 5.03 | 23,900 |   |  			
            | 3/8/2013 | +0.30 / +1.90% | 16.00 | 16.10 | 16.00 | 16.10 | 16.00 | 4.99 | 3,100 |   |  
            | 3/7/2013 | -0.30 / -1.86% | 16.00 | 16.20 | 15.80 | 15.80 | 15.82 | 4.90 | 5,543 |   |  			
            | 3/6/2013 | +0.30 / +1.90% | 15.60 | 16.10 | 15.60 | 16.10 | 15.86 | 4.99 | 6,200 |   |  
            | 3/5/2013 | +0.10 / +0.64% | 15.60 | 15.80 | 15.40 | 15.80 | 15.56 | 4.90 | 24,800 |   |  			
            | 3/4/2013 | -0.30 / -1.88% | 16.00 | 16.00 | 15.70 | 15.70 | 15.89 | 4.87 | 63,540 |   |  
            | 3/1/2013 | -0.10 / -0.62% | 16.20 | 16.20 | 16.00 | 16.00 | 16.13 | 4.96 | 32,100 |   |  			
            | 2/28/2013 | 0.00 / 0.00% | 16.30 | 16.40 | 16.10 | 16.10 | 16.19 | 4.99 | 58,300 |   |  
            | 2/27/2013 | -0.30 / -1.83% | 16.10 | 16.20 | 16.00 | 16.10 | 16.10 | 4.99 | 30,900 |   |  			
            | 2/26/2013 | -0.10 / -0.61% | 16.60 | 16.60 | 16.10 | 16.40 | 16.36 | 5.09 | 112,100 |   |  
            | 2/25/2013 | 0.00 / 0.00% | 16.90 | 16.90 | 16.50 | 16.50 | 16.56 | 5.12 | 14,100 |   |  			
            | 2/22/2013 | 0.00 / 0.00% | 16.60 | 16.80 | 16.30 | 16.50 | 16.43 | 5.12 | 102,024 |   |  
            | 2/21/2013 | -0.90 / -5.17% | 17.30 | 17.30 | 16.30 | 16.50 | 16.59 | 5.12 | 157,600 |   |  			
            | 2/20/2013 | +0.40 / +2.35% | 17.00 | 17.40 | 16.50 | 17.40 | 16.97 | 5.40 | 63,100 |   |  
            | 2/19/2013 | -0.60 / -3.41% | 17.70 | 18.00 | 16.80 | 17.00 | 17.32 | 5.27 | 99,100 |   |  			
            | 2/18/2013 | +1.60 / +10.00% | 16.10 | 17.60 | 16.00 | 17.60 | 17.31 | 5.46 | 265,600 |   |  
            | 2/8/2013 | +0.10 / +0.63% | 16.00 | 16.00 | 15.90 | 16.00 | 15.97 | 4.96 | 37,000 |   |  			
            | 2/7/2013 | -0.10 / -0.63% | 16.00 | 16.00 | 15.90 | 15.90 | 15.97 | 4.93 | 59,100 |   |  
            | 2/6/2013 | +0.30 / +1.91% | 15.70 | 16.00 | 15.70 | 16.00 | 15.88 | 4.96 | 13,459 |   |  			
            | 2/5/2013 | -0.20 / -1.26% | 15.90 | 15.90 | 15.70 | 15.70 | 15.75 | 4.87 | 29,900 |   |  
            | 2/4/2013 | -0.10 / -0.63% | 16.10 | 16.10 | 15.80 | 15.90 | 15.90 | 4.93 | 13,700 |   |  			
            | 2/1/2013 | -0.10 / -0.62% | 16.10 | 16.10 | 16.00 | 16.00 | 16.01 | 4.96 | 36,200 |   |  
            | 1/31/2013 | +0.10 / +0.63% | 16.00 | 16.30 | 16.00 | 16.10 | 16.13 | 4.99 | 43,000 |   |  |