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            | 
                    Closing price on 4/6/2012
                 |  |  
    
        |           
                
                    | Open | 11.60 |  
                    | High | 11.80 |  
                    | Low | 11.40 |  
                    | Volume | 73,495 |  
                    | Split-adjusted Price | 6.99 |  
                
             | 
 |  PVE Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/6/2012 | -0.40 / -3.36% | 11.60 | 11.80 | 11.40 | 11.50 | 11.50 | 6.99 | 73,495 |   |  
            | 4/5/2012 | +0.60 / +5.31% | 11.30 | 11.90 | 11.20 | 11.90 | 11.90 | 7.24 | 32,800 |   |  			
            | 4/4/2012 | -0.50 / -4.24% | 11.80 | 11.80 | 11.30 | 11.30 | 11.30 | 6.87 | 57,500 |   |  
            | 4/3/2012 | +0.70 / +6.31% | 11.30 | 11.80 | 11.30 | 11.80 | 11.80 | 7.18 | 66,500 |   |  			
            | 3/30/2012 | -0.20 / -1.77% | 11.30 | 11.30 | 11.00 | 11.10 | 11.10 | 6.75 | 104,225 |   |  
            | 3/29/2012 | -0.60 / -5.04% | 12.00 | 12.10 | 11.20 | 11.30 | 11.30 | 6.87 | 243,455 |   |  			
            | 3/28/2012 | -0.10 / -0.83% | 12.00 | 12.00 | 11.60 | 11.90 | 11.90 | 7.24 | 34,650 |   |  
            | 3/27/2012 | -0.90 / -6.98% | 12.50 | 12.80 | 12.00 | 12.00 | 12.00 | 7.30 | 87,215 |   |  			
            | 3/26/2012 | +0.40 / +3.20% | 12.90 | 13.30 | 12.70 | 12.90 | 12.90 | 7.84 | 271,700 |   |  
            | 3/23/2012 | +0.80 / +6.84% | 11.90 | 12.50 | 11.80 | 12.50 | 12.50 | 7.60 | 482,400 |   |  			
            | 3/22/2012 | 0.00 / 0.00% | 11.80 | 11.80 | 11.40 | 11.70 | 11.70 | 7.11 | 36,800 |   |  
            | 3/21/2012 | +0.40 / +3.54% | 11.50 | 11.90 | 11.40 | 11.70 | 11.70 | 7.11 | 231,800 |   |  			
            | 3/20/2012 | +0.20 / +1.80% | 11.20 | 11.40 | 11.00 | 11.30 | 11.30 | 6.87 | 119,200 |   |  
            | 3/19/2012 | -0.40 / -3.48% | 11.50 | 11.60 | 11.00 | 11.10 | 11.10 | 6.75 | 49,300 |   |  			
            | 3/16/2012 | -0.10 / -0.86% | 11.70 | 11.80 | 11.40 | 11.50 | 11.50 | 6.99 | 71,600 |   |  
            | 3/15/2012 | +0.40 / +3.57% | 11.00 | 11.60 | 10.80 | 11.60 | 11.60 | 7.05 | 47,600 |   |  			
            | 3/14/2012 | 0.00 / 0.00% | 11.30 | 11.40 | 11.00 | 11.20 | 11.20 | 6.81 | 44,000 |   |  
            | 3/13/2012 | +0.80 / +7.69% | 10.90 | 11.20 | 10.70 | 11.20 | 11.20 | 6.81 | 138,600 |   |  			
            | 3/12/2012 | -0.40 / -3.70% | 10.90 | 10.90 | 10.40 | 10.40 | 10.40 | 6.32 | 78,100 |   |  
            | 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 |   |  |