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            | 
                    Closing price on 2/26/2013
                 |  |  
    
        |           
                
                    | Open | 13.60 |  
                    | High | 13.60 |  
                    | Low | 12.80 |  
                    | Volume | 670,040 |  
                    | Split-adjusted Price | 5.53 |  
                
             | 
 |  PVC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/26/2013 | -0.60 / -4.41% | 13.60 | 13.60 | 12.80 | 13.00 | 13.22 | 5.53 | 670,040 |   |  
            | 2/25/2013 | 0.00 / 0.00% | 13.90 | 13.90 | 13.40 | 13.60 | 13.64 | 5.79 | 397,400 |   |  			
            | 2/22/2013 | +0.10 / +0.74% | 14.50 | 14.50 | 13.20 | 13.60 | 13.68 | 5.79 | 582,850 |   |  
            | 2/21/2013 | -1.30 / -8.78% | 14.70 | 14.70 | 13.30 | 13.50 | 14.02 | 5.75 | 882,250 |   |  			
            | 2/20/2013 | 0.00 / 0.00% | 14.60 | 14.80 | 14.50 | 14.80 | 14.63 | 6.30 | 975,600 |   |  
            | 2/19/2013 | -0.40 / -2.63% | 15.10 | 15.20 | 14.80 | 14.80 | 14.98 | 6.30 | 728,854 |   |  			
            | 2/18/2013 | +1.00 / +7.04% | 14.40 | 15.20 | 14.40 | 15.20 | 14.83 | 6.47 | 1,008,222 |   |  
            | 2/8/2013 | +0.40 / +2.90% | 13.70 | 14.40 | 13.60 | 14.20 | 14.19 | 6.05 | 1,429,700 |   |  			
            | 2/7/2013 | +0.20 / +1.47% | 13.60 | 13.80 | 13.50 | 13.80 | 13.59 | 5.88 | 399,270 |   |  
            | 2/6/2013 | +0.20 / +1.49% | 13.50 | 13.70 | 13.40 | 13.60 | 13.54 | 5.79 | 292,029 |   |  			
            | 2/5/2013 | -0.10 / -0.74% | 13.40 | 13.50 | 13.30 | 13.40 | 13.39 | 5.70 | 338,078 |   |  
            | 2/4/2013 | 0.00 / 0.00% | 13.50 | 13.80 | 13.50 | 13.50 | 13.66 | 5.75 | 258,653 |   |  			
            | 2/1/2013 | 0.00 / 0.00% | 13.40 | 13.50 | 13.20 | 13.50 | 13.37 | 5.75 | 271,540 |   |  
            | 1/31/2013 | -0.20 / -1.46% | 13.60 | 13.80 | 13.40 | 13.50 | 13.62 | 5.75 | 268,700 |   |  			
            | 1/30/2013 | 0.00 / 0.00% | 13.70 | 13.80 | 13.60 | 13.70 | 13.72 | 5.83 | 400,200 |   |  
            | 1/29/2013 | +0.10 / +0.74% | 13.60 | 13.70 | 13.30 | 13.70 | 13.54 | 5.83 | 233,200 |   |  			
            | 1/28/2013 | +0.10 / +0.74% | 13.60 | 13.90 | 13.50 | 13.60 | 13.74 | 5.79 | 351,692 |   |  
            | 1/25/2013 | +0.30 / +2.27% | 13.30 | 13.60 | 13.30 | 13.50 | 13.42 | 5.75 | 278,116 |   |  			
            | 1/24/2013 | +0.10 / +0.76% | 13.10 | 13.40 | 13.10 | 13.20 | 13.25 | 5.62 | 293,100 |   |  
            | 1/23/2013 | +0.10 / +0.77% | 13.10 | 13.10 | 12.80 | 13.10 | 12.96 | 5.58 | 338,000 |   |  			
            | 1/22/2013 | -0.30 / -2.26% | 13.40 | 13.40 | 12.80 | 13.00 | 13.05 | 5.53 | 467,700 |   |  
            | 1/21/2013 | -0.20 / -1.48% | 13.60 | 13.60 | 13.30 | 13.30 | 13.43 | 5.66 | 305,200 |   |  			
            | 1/18/2013 | -0.20 / -1.46% | 13.50 | 13.80 | 13.40 | 13.50 | 13.53 | 5.75 | 639,700 |   |  
            | 1/17/2013 | -0.30 / -2.14% | 14.00 | 14.10 | 13.60 | 13.70 | 13.80 | 5.83 | 524,100 |   |  			
            | 1/16/2013 | -0.10 / -0.71% | 14.50 | 14.50 | 14.00 | 14.00 | 14.21 | 5.96 | 638,900 |   |  
            | 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 |   |  |