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                    Closing price on 1/15/2013
                 |  |  
    
        |           
                
                    | Open | 13.50 |  
                    | High | 14.40 |  
                    | Low | 13.50 |  
                    | Volume | 1,268,702 |  
                    | Split-adjusted Price | 6.00 |  
                
             | 
 |  PVC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/15/2013 | +0.70 / +5.22% | 13.50 | 14.40 | 13.50 | 14.10 | 13.89 | 6.00 | 1,268,702 |   |  
            | 1/14/2013 | -0.10 / -0.74% | 13.70 | 13.70 | 13.30 | 13.40 | 13.45 | 5.70 | 363,639 |   |  			
            | 1/11/2013 | 0.00 / 0.00% | 13.80 | 14.00 | 13.50 | 13.50 | 13.66 | 5.75 | 420,797 |   |  
            | 1/10/2013 | +0.20 / +1.50% | 13.30 | 13.70 | 13.20 | 13.50 | 13.43 | 5.75 | 510,060 |   |  			
            | 1/9/2013 | -0.40 / -2.92% | 13.80 | 14.10 | 13.20 | 13.30 | 13.70 | 5.66 | 727,901 |   |  
            | 1/8/2013 | +0.20 / +1.48% | 13.70 | 14.00 | 13.50 | 13.70 | 13.67 | 5.83 | 474,908 |   |  			
            | 1/7/2013 | +0.10 / +0.75% | 13.60 | 13.90 | 13.30 | 13.50 | 13.59 | 5.75 | 927,900 |   |  
            | 1/4/2013 | +0.30 / +2.29% | 13.30 | 13.50 | 13.10 | 13.40 | 13.39 | 5.70 | 436,300 |   |  			
            | 1/3/2013 | -0.40 / -2.96% | 13.60 | 13.60 | 12.90 | 13.10 | 13.26 | 5.58 | 551,200 |   |  
            | 1/2/2013 | +0.40 / +3.05% | 13.10 | 13.70 | 13.10 | 13.50 | 13.44 | 5.75 | 575,400 |   |  			
            | 12/28/2012 | +0.10 / +0.77% | 12.90 | 13.20 | 12.70 | 13.10 | 13.00 | 5.58 | 369,900 |   |  
            | 12/27/2012 | +0.40 / +3.17% | 12.70 | 13.30 | 12.70 | 13.00 | 13.03 | 5.53 | 599,900 |   |  			
            | 12/26/2012 | +0.20 / +1.61% | 12.40 | 12.70 | 12.30 | 12.60 | 12.41 | 5.36 | 489,400 |   |  
            | 12/25/2012 | -0.10 / -0.80% | 12.00 | 12.60 | 12.00 | 12.40 | 12.36 | 5.28 | 221,540 |   |  			
            | 12/24/2012 | +0.20 / +1.63% | 12.40 | 12.50 | 12.20 | 12.50 | 12.35 | 5.32 | 83,300 |   |  
            | 12/21/2012 | 0.00 / 0.00% | 12.20 | 12.30 | 12.10 | 12.30 | 12.20 | 5.24 | 73,956 |   |  			
            | 12/20/2012 | -0.20 / -1.60% | 12.60 | 12.60 | 12.30 | 12.30 | 12.38 | 5.24 | 149,800 |   |  
            | 12/19/2012 | +0.20 / +1.63% | 12.40 | 12.60 | 12.30 | 12.50 | 12.45 | 5.32 | 135,717 |   |  			
            | 12/18/2012 | -0.10 / -0.81% | 12.40 | 12.50 | 12.20 | 12.30 | 12.33 | 5.24 | 186,500 |   |  
            | 12/17/2012 | +0.10 / +0.81% | 12.20 | 12.60 | 12.20 | 12.40 | 12.44 | 5.28 | 378,800 |   |  			
            | 12/14/2012 | -0.20 / -1.60% | 12.50 | 12.50 | 12.20 | 12.30 | 12.33 | 5.24 | 296,400 |   |  
            | 12/13/2012 | 0.00 / 0.00% | 12.50 | 12.70 | 12.30 | 12.50 | 12.47 | 5.32 | 300,039 |   |  			
            | 12/12/2012 | +0.30 / +2.46% | 12.00 | 12.60 | 12.00 | 12.50 | 12.38 | 5.32 | 210,100 |   |  
            | 12/11/2012 | +0.40 / +3.39% | 12.00 | 12.50 | 11.60 | 12.20 | 12.12 | 5.19 | 665,600 |   |  			
            | 12/10/2012 | +0.10 / +0.85% | 11.60 | 11.90 | 11.60 | 11.80 | 11.73 | 5.02 | 261,240 |   |  
            | 12/7/2012 | 0.00 / 0.00% | 11.80 | 11.80 | 11.50 | 11.70 | 11.62 | 4.98 | 100,900 |   |  			
            | 12/6/2012 | -0.10 / -0.85% | 11.70 | 11.80 | 11.60 | 11.70 | 11.68 | 4.98 | 148,100 |   |  
            | 12/5/2012 | +0.10 / +0.85% | 11.70 | 11.90 | 11.60 | 11.80 | 11.73 | 5.02 | 187,000 |   |  			
            | 12/4/2012 | +0.30 / +2.63% | 11.50 | 11.70 | 11.40 | 11.70 | 11.52 | 4.98 | 130,300 |   |  
            | 12/3/2012 | +0.10 / +0.88% | 11.40 | 11.40 | 11.20 | 11.40 | 11.36 | 4.85 | 50,500 |   |  |