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                    Closing price on 3/9/2012
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                    | Open | 11.50 |  
                    | High | 11.50 |  
                    | Low | 10.70 |  
                    | Volume | 152,800 |  
                    | Split-adjusted Price | 6.57 |  
                
             | 
 |  PVE Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/9/2012 | -0.50 / -4.42% | 11.50 | 11.50 | 10.70 | 10.80 | 10.80 | 6.57 | 152,800 |   |  
            | 3/8/2012 | -0.40 / -3.42% | 11.40 | 11.70 | 11.10 | 11.30 | 11.30 | 6.87 | 155,500 |   |  			
            | 3/7/2012 | 0.00 / 0.00% | 11.80 | 11.80 | 11.50 | 11.70 | 11.70 | 7.11 | 118,100 |   |  
            | 3/6/2012 | -0.80 / -6.40% | 12.70 | 13.00 | 11.70 | 11.70 | 11.70 | 7.11 | 139,600 |   |  			
            | 3/5/2012 | +0.70 / +5.93% | 12.00 | 12.50 | 12.00 | 12.50 | 12.50 | 7.60 | 304,300 |   |  
            | 3/2/2012 | +0.10 / +0.85% | 11.80 | 11.90 | 11.50 | 11.80 | 11.80 | 7.18 | 129,500 |   |  			
            | 3/1/2012 | 0.00 / 0.00% | 11.00 | 11.70 | 11.00 | 11.70 | 11.70 | 7.11 | 108,900 |   |  
            | 2/29/2012 | +0.20 / +1.74% | 11.50 | 11.70 | 11.40 | 11.70 | 11.70 | 7.11 | 75,700 |   |  			
            | 2/28/2012 | -0.60 / -4.96% | 12.00 | 12.20 | 11.30 | 11.50 | 11.50 | 6.99 | 150,300 |   |  
            | 2/27/2012 | +0.40 / +3.42% | 11.90 | 12.30 | 11.70 | 12.10 | 12.10 | 7.36 | 142,200 |   |  			
            | 2/24/2012 | -0.10 / -0.85% | 11.80 | 12.10 | 11.60 | 11.70 | 11.70 | 7.11 | 139,400 |   |  
            | 2/23/2012 | 0.00 / 0.00% | 11.80 | 11.90 | 11.60 | 11.80 | 11.80 | 7.18 | 117,100 |   |  			
            | 2/22/2012 | +0.30 / +2.61% | 11.50 | 11.80 | 11.50 | 11.80 | 11.80 | 7.18 | 100,800 |   |  
            | 2/21/2012 | -0.40 / -3.36% | 12.00 | 12.00 | 11.50 | 11.50 | 11.50 | 6.99 | 213,200 |   |  			
            | 2/20/2012 | +0.40 / +3.48% | 11.70 | 11.90 | 11.50 | 11.90 | 11.90 | 7.24 | 161,100 |   |  
            | 2/17/2012 | +0.10 / +0.88% | 11.40 | 11.50 | 11.40 | 11.50 | 11.50 | 6.99 | 80,500 |   |  			
            | 2/16/2012 | -0.10 / -0.87% | 11.40 | 11.50 | 10.70 | 11.40 | 11.40 | 6.93 | 66,700 |   |  
            | 2/15/2012 | 0.00 / 0.00% | 11.50 | 11.50 | 11.30 | 11.50 | 11.50 | 6.99 | 71,800 |   |  			
            | 2/14/2012 | +0.30 / +2.68% | 11.40 | 11.60 | 11.40 | 11.50 | 11.50 | 6.99 | 52,100 |   |  
            | 2/13/2012 | -0.40 / -3.45% | 11.40 | 11.40 | 11.20 | 11.20 | 11.20 | 6.81 | 67,200 |   |  			
            | 2/10/2012 | -0.20 / -1.69% | 11.40 | 11.70 | 11.30 | 11.60 | 11.60 | 7.05 | 127,800 |   |  
            | 2/9/2012 | +0.30 / +2.61% | 11.50 | 12.00 | 11.50 | 11.80 | 11.80 | 7.18 | 134,300 |   |  			
            | 2/8/2012 | +0.60 / +5.50% | 11.20 | 11.50 | 11.20 | 11.50 | 11.50 | 6.99 | 268,900 |   |  
            | 2/7/2012 | 0.00 / 0.00% | 11.00 | 11.40 | 10.60 | 10.90 | 10.90 | 6.63 | 39,500 |   |  			
            | 2/6/2012 | -0.30 / -2.68% | 11.40 | 11.40 | 10.80 | 10.90 | 10.90 | 6.63 | 87,400 |   |  
            | 2/3/2012 | -0.30 / -2.61% | 12.00 | 12.00 | 11.00 | 11.20 | 11.20 | 6.81 | 30,400 |   |  			
            | 2/2/2012 | +0.60 / +5.50% | 10.60 | 11.50 | 10.50 | 11.50 | 11.50 | 6.99 | 255,100 |   |  
            | 2/1/2012 | 0.00 / 0.00% | 10.70 | 10.90 | 10.50 | 10.90 | 10.90 | 6.63 | 147,700 |   |  			
            | 1/31/2012 | +0.40 / +3.81% | 10.30 | 11.10 | 10.20 | 10.90 | 10.90 | 6.63 | 349,000 |   |  
            | 1/30/2012 | 0.00 / 0.00% | 10.30 | 10.60 | 10.10 | 10.50 | 10.50 | 6.38 | 43,700 |   |  |