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                    Closing price on 12/24/2012
                 |  |  
    
        |           
                
                    | Open | 12.40 |  
                    | High | 12.50 |  
                    | Low | 12.20 |  
                    | Volume | 83,300 |  
                    | Split-adjusted Price | 5.32 |  
                
             | 
 |  PVC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 11/30/2012 | -0.10 / -0.88% | 11.50 | 11.50 | 11.30 | 11.30 | 11.33 | 4.81 | 51,434 |   |  
            | 11/29/2012 | +0.10 / +0.88% | 11.30 | 11.40 | 11.20 | 11.40 | 11.27 | 4.85 | 171,380 |   |  			
            | 11/28/2012 | -0.10 / -0.88% | 11.30 | 11.50 | 11.20 | 11.30 | 11.30 | 4.81 | 42,700 |   |  
            | 11/27/2012 | +0.10 / +0.88% | 11.30 | 11.40 | 11.20 | 11.40 | 11.34 | 4.85 | 82,300 |   |  			
            | 11/26/2012 | -0.20 / -1.74% | 11.60 | 11.60 | 11.30 | 11.30 | 11.37 | 4.81 | 172,400 |   |  
            | 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 |   |  |