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            | 
                    Closing price on 1/15/2016
                 |  |  
    
        |           
                
                    | Open | 74.00 |  
                    | High | 74.00 |  
                    | Low | 73.00 |  
                    | Volume | 17,460 |  
                    | Split-adjusted Price | 13.30 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 12/8/2015 | +1.50 / +2.04% | 73.50 | 75.00 | 72.00 | 75.00 | 73.73 | 13.66 | 118,500 |   |  			
            | 12/7/2015 | +0.50 / +0.68% | 73.00 | 75.00 | 72.50 | 73.50 | 73.63 | 13.39 | 104,120 |   |  
            | 12/4/2015 | -1.00 / -1.35% | 74.00 | 75.50 | 72.50 | 73.00 | 73.39 | 13.30 | 33,290 |   |  |