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                    Closing price on 11/23/2012
                 |  |  
    
        |           
                
                    | Open | 11.60 |  
                    | High | 11.70 |  
                    | Low | 11.40 |  
                    | Volume | 124,700 |  
                    | Split-adjusted Price | 4.90 |  
                
             | 
 |  PVC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/23/2012 | -0.20 / -1.71% | 11.60 | 11.70 | 11.40 | 11.50 | 11.57 | 4.90 | 124,700 |   |  
            | 11/22/2012 | 0.00 / 0.00% | 11.60 | 11.70 | 11.60 | 11.70 | 11.60 | 4.98 | 82,100 |   |  			
            | 11/21/2012 | -1.30 / -10.00% | 11.80 | 11.90 | 11.50 | 11.70 | 11.66 | 4.98 | 184,100 |   |  
            | 11/20/2012 | 0.00 / 0.00% | 13.00 | 13.10 | 12.80 | 13.00 | 12.95 | 4.93 | 346,200 |   |  			
            | 11/19/2012 | 0.00 / 0.00% | 13.30 | 13.30 | 12.90 | 13.00 | 12.96 | 4.93 | 188,400 |   |  
            | 11/16/2012 | +0.10 / +0.78% | 12.80 | 13.00 | 12.50 | 13.00 | 12.89 | 4.93 | 269,000 |   |  			
            | 11/15/2012 | -0.10 / -0.77% | 13.00 | 13.10 | 12.90 | 12.90 | 12.98 | 4.90 | 324,974 |   |  
            | 11/14/2012 | -0.10 / -0.76% | 13.00 | 13.20 | 12.90 | 13.00 | 13.03 | 4.93 | 248,000 |   |  			
            | 11/13/2012 | -0.20 / -1.50% | 13.50 | 13.50 | 12.90 | 13.10 | 13.09 | 4.97 | 310,800 |   |  
            | 11/12/2012 | +0.60 / +4.72% | 13.40 | 13.40 | 12.90 | 13.30 | 13.22 | 5.05 | 794,103 |   |  			
            | 11/9/2012 | +0.70 / +5.83% | 12.50 | 12.70 | 12.20 | 12.70 | 12.60 | 4.82 | 349,100 |   |  
            | 11/8/2012 | +0.10 / +0.84% | 11.90 | 12.00 | 11.70 | 12.00 | 11.85 | 4.55 | 122,400 |   |  			
            | 11/7/2012 | +0.50 / +4.39% | 11.50 | 11.90 | 11.50 | 11.90 | 11.81 | 4.52 | 185,000 |   |  
            | 11/6/2012 | +0.10 / +0.88% | 11.40 | 11.50 | 11.10 | 11.40 | 11.35 | 4.33 | 149,900 |   |  			
            | 11/5/2012 | -0.70 / -5.83% | 11.90 | 11.90 | 11.30 | 11.30 | 11.51 | 4.29 | 327,410 |   |  
            | 11/2/2012 | -0.80 / -6.25% | 13.10 | 13.10 | 12.00 | 12.00 | 12.07 | 4.55 | 410,800 |   |  			
            | 11/1/2012 | +0.10 / +0.79% | 12.80 | 12.90 | 12.50 | 12.80 | 12.68 | 4.86 | 119,819 |   |  
            | 10/31/2012 | -0.20 / -1.55% | 13.20 | 13.20 | 12.60 | 12.70 | 12.77 | 4.82 | 24,260 |   |  			
            | 10/30/2012 | +0.50 / +4.03% | 12.50 | 13.30 | 12.40 | 12.90 | 12.88 | 4.90 | 647,640 |   |  
            | 10/29/2012 | -0.10 / -0.80% | 12.50 | 12.50 | 12.30 | 12.40 | 12.41 | 4.71 | 29,700 |   |  			
            | 10/26/2012 | 0.00 / 0.00% | 12.40 | 12.60 | 12.40 | 12.50 | 12.53 | 4.74 | 39,200 |   |  
            | 10/25/2012 | -0.10 / -0.79% | 12.20 | 12.80 | 11.80 | 12.50 | 12.34 | 4.74 | 102,300 |   |  			
            | 10/24/2012 | 0.00 / 0.00% | 12.50 | 12.60 | 12.40 | 12.60 | 12.51 | 4.78 | 56,200 |   |  
            | 10/23/2012 | 0.00 / 0.00% | 12.50 | 12.80 | 12.50 | 12.60 | 12.60 | 4.78 | 61,700 |   |  			
            | 10/22/2012 | -0.40 / -3.08% | 12.90 | 12.90 | 12.40 | 12.60 | 12.65 | 4.78 | 54,900 |   |  
            | 10/19/2012 | 0.00 / 0.00% | 13.00 | 13.00 | 12.40 | 13.00 | 12.76 | 4.93 | 239,000 |   |  			
            | 10/18/2012 | 0.00 / 0.00% | 13.00 | 13.20 | 13.00 | 13.00 | 13.00 | 4.93 | 89,400 |   |  
            | 10/17/2012 | -0.10 / -0.76% | 13.30 | 13.30 | 12.90 | 13.00 | 13.01 | 4.93 | 226,060 |   |  			
            | 10/16/2012 | +0.50 / +3.97% | 12.50 | 13.10 | 12.50 | 13.10 | 12.97 | 4.97 | 210,300 |   |  
            | 10/15/2012 | -0.10 / -0.79% | 12.80 | 12.80 | 12.50 | 12.60 | 12.60 | 4.78 | 109,200 |   |  |