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                    Closing price on 10/11/2012
                 |  |  
    
        |           
                
                    | Open | 12.70 |  
                    | High | 13.40 |  
                    | Low | 12.70 |  
                    | Volume | 255,934 |  
                    | Split-adjusted Price | 4.86 |  
                
             | 
 |  PVC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/11/2012 | 0.00 / 0.00% | 12.70 | 13.40 | 12.70 | 12.80 | 13.06 | 4.86 | 255,934 |   |  
            | 10/10/2012 | +0.40 / +3.23% | 12.60 | 12.80 | 12.30 | 12.80 | 12.58 | 4.86 | 125,000 |   |  			
            | 10/9/2012 | -0.10 / -0.80% | 12.50 | 12.70 | 12.40 | 12.40 | 12.63 | 4.71 | 228,800 |   |  
            | 10/8/2012 | +0.50 / +4.17% | 12.30 | 12.50 | 12.00 | 12.50 | 12.31 | 4.74 | 162,800 |   |  			
            | 10/5/2012 | +0.40 / +3.45% | 11.60 | 12.10 | 11.50 | 12.00 | 11.86 | 4.55 | 156,100 |   |  
            | 10/4/2012 | +0.10 / +0.87% | 11.70 | 11.70 | 11.50 | 11.60 | 11.59 | 4.40 | 50,100 |   |  			
            | 10/3/2012 | +0.20 / +1.77% | 11.40 | 11.70 | 11.40 | 11.50 | 11.56 | 4.36 | 127,800 |   |  
            | 10/2/2012 | +0.10 / +0.89% | 11.10 | 11.30 | 11.00 | 11.30 | 11.18 | 4.29 | 103,000 |   |  			
            | 10/1/2012 | -0.20 / -1.75% | 11.50 | 11.50 | 10.90 | 11.20 | 11.08 | 4.25 | 42,401 |   |  
            | 9/28/2012 | -0.10 / -0.87% | 11.30 | 11.50 | 11.30 | 11.40 | 11.40 | 4.33 | 72,300 |   |  			
            | 9/27/2012 | -0.10 / -0.86% | 11.50 | 11.50 | 11.40 | 11.50 | 11.45 | 4.36 | 19,500 |   |  
            | 9/26/2012 | +0.40 / +3.57% | 11.20 | 11.60 | 11.20 | 11.60 | 11.51 | 4.40 | 76,200 |   |  			
            | 9/25/2012 | -0.20 / -1.75% | 11.10 | 11.50 | 11.00 | 11.20 | 11.33 | 4.25 | 38,400 |   |  
            | 9/24/2012 | -0.60 / -5.00% | 11.40 | 11.50 | 11.30 | 11.40 | 11.36 | 4.33 | 67,100 |   |  			
            | 9/21/2012 | 0.00 / 0.00% | 12.00 | 12.10 | 11.80 | 12.00 | 11.93 | 4.36 | 146,100 |   |  
            | 9/20/2012 | -0.20 / -1.64% | 12.00 | 12.00 | 11.70 | 12.00 | 11.84 | 4.36 | 59,700 |   |  			
            | 9/19/2012 | +0.40 / +3.39% | 11.80 | 12.20 | 11.50 | 12.20 | 11.94 | 4.44 | 161,900 |   |  
            | 9/18/2012 | -0.70 / -5.60% | 12.40 | 12.40 | 11.80 | 11.80 | 11.99 | 4.29 | 287,674 |   |  			
            | 9/17/2012 | -0.50 / -3.85% | 13.10 | 13.10 | 12.40 | 12.50 | 12.60 | 4.54 | 123,000 |   |  
            | 9/14/2012 | +0.30 / +2.36% | 12.80 | 13.20 | 12.70 | 13.00 | 12.95 | 4.73 | 111,400 |   |  			
            | 9/13/2012 | +0.30 / +2.42% | 12.50 | 12.70 | 12.10 | 12.70 | 12.38 | 4.62 | 100,217 |   |  
            | 9/12/2012 | 0.00 / 0.00% | 12.10 | 12.70 | 12.10 | 12.40 | 12.57 | 4.51 | 28,300 |   |  			
            | 9/11/2012 | +0.10 / +0.81% | 12.30 | 12.50 | 12.10 | 12.40 | 12.28 | 4.51 | 65,300 |   |  
            | 9/10/2012 | -0.90 / -6.82% | 13.00 | 13.00 | 12.30 | 12.30 | 12.41 | 4.47 | 258,400 |   |  			
            | 9/7/2012 | 0.00 / 0.00% | 13.20 | 13.40 | 13.00 | 13.20 | 13.17 | 4.80 | 63,600 |   |  
            | 9/6/2012 | -0.20 / -1.49% | 13.40 | 13.40 | 13.10 | 13.20 | 13.27 | 4.80 | 63,800 |   |  			
            | 9/5/2012 | -0.20 / -1.47% | 13.50 | 13.50 | 13.10 | 13.40 | 13.27 | 4.87 | 49,178 |   |  
            | 9/4/2012 | +0.10 / +0.74% | 13.50 | 13.70 | 13.50 | 13.60 | 13.55 | 4.94 | 75,300 |   |  			
            | 8/31/2012 | 0.00 / 0.00% | 13.20 | 13.50 | 13.20 | 13.50 | 13.43 | 4.91 | 48,200 |   |  
            | 8/30/2012 | -0.10 / -0.74% | 13.70 | 13.70 | 13.40 | 13.50 | 13.53 | 4.91 | 44,100 |   |  |