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            | 
                    Closing price on 2/1/2012
                 |  |  
    
        |           
                
                    | Open | 10.70 |  
                    | High | 10.90 |  
                    | Low | 10.50 |  
                    | Volume | 147,700 |  
                    | Split-adjusted Price | 6.63 |  
                
             | 
 |  PVE Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 1/20/2012 | -0.10 / -0.94% | 10.80 | 10.80 | 10.50 | 10.50 | 10.50 | 6.38 | 105,500 |   |  			
            | 1/19/2012 | +0.30 / +2.91% | 10.50 | 10.70 | 10.30 | 10.60 | 10.60 | 6.45 | 108,200 |   |  
            | 1/18/2012 | +0.60 / +6.19% | 9.70 | 10.30 | 9.70 | 10.30 | 10.30 | 6.26 | 54,900 |   |  			
            | 1/17/2012 | +0.10 / +1.04% | 9.70 | 9.80 | 9.60 | 9.70 | 9.70 | 5.90 | 74,100 |   |  
            | 1/16/2012 | +0.10 / +1.05% | 9.40 | 9.70 | 9.40 | 9.60 | 9.60 | 5.84 | 53,100 |   |  			
            | 1/13/2012 | 0.00 / 0.00% | 9.50 | 9.50 | 9.30 | 9.50 | 9.50 | 5.78 | 64,900 |   |  
            | 1/12/2012 | 0.00 / 0.00% | 9.50 | 9.50 | 9.40 | 9.50 | 9.50 | 5.78 | 19,000 |   |  			
            | 1/11/2012 | 0.00 / 0.00% | 9.50 | 9.50 | 9.40 | 9.50 | 9.50 | 5.78 | 135,400 |   |  
            | 1/10/2012 | -0.10 / -1.04% | 9.70 | 9.70 | 9.40 | 9.50 | 9.50 | 5.78 | 38,700 |   |  			
            | 1/9/2012 | +0.30 / +3.23% | 9.30 | 9.60 | 9.20 | 9.60 | 9.60 | 5.84 | 74,600 |   |  
            | 1/6/2012 | -1.50 / -13.89% | 9.00 | 9.40 | 9.00 | 9.30 | 9.30 | 5.65 | 109,500 |   |  			
            | 1/5/2012 | -0.10 / -0.92% | 10.80 | 11.00 | 10.50 | 10.80 | 10.80 | 5.65 | 366,900 |   |  
            | 1/4/2012 | +0.60 / +5.83% | 10.30 | 11.00 | 10.00 | 10.90 | 10.90 | 5.71 | 573,400 |   |  			
            | 1/3/2012 | +0.60 / +6.19% | 10.30 | 10.30 | 10.10 | 10.30 | 10.30 | 5.39 | 57,700 |   |  
            | 12/30/2011 | +0.50 / +5.43% | 9.60 | 9.70 | 9.50 | 9.70 | 9.70 | 5.08 | 98,400 |   |  			
            | 12/29/2011 | +0.50 / +5.75% | 8.70 | 9.20 | 8.70 | 9.20 | 9.20 | 4.82 | 218,300 |   |  
            | 12/28/2011 | +0.40 / +4.82% | 7.70 | 8.70 | 7.70 | 8.70 | 8.70 | 4.56 | 67,500 |   |  			
            | 12/27/2011 | -0.20 / -2.35% | 8.20 | 8.50 | 8.00 | 8.30 | 8.30 | 4.35 | 98,200 |   |  
            | 12/26/2011 | -0.50 / -5.56% | 8.60 | 8.80 | 8.50 | 8.50 | 8.50 | 4.45 | 192,100 |   |  			
            | 12/23/2011 | -0.20 / -2.17% | 9.20 | 9.20 | 9.00 | 9.00 | 9.00 | 4.71 | 66,700 |   |  
            | 12/22/2011 | 0.00 / 0.00% | 9.30 | 9.50 | 9.10 | 9.20 | 9.20 | 4.82 | 135,100 |   |  			
            | 12/21/2011 | 0.00 / 0.00% | 8.80 | 9.50 | 8.70 | 9.20 | 9.20 | 4.82 | 51,000 |   |  
            | 12/20/2011 | -0.30 / -3.16% | 9.30 | 9.40 | 9.20 | 9.20 | 9.20 | 4.82 | 50,800 |   |  			
            | 12/19/2011 | -0.40 / -4.04% | 9.80 | 10.00 | 9.40 | 9.50 | 9.50 | 4.97 | 22,900 |   |  
            | 12/16/2011 | +0.60 / +6.45% | 9.50 | 9.90 | 9.50 | 9.90 | 9.90 | 5.18 | 114,400 |   |  			
            | 12/15/2011 | -0.50 / -5.10% | 9.60 | 9.60 | 9.20 | 9.30 | 9.30 | 4.87 | 93,700 |   |  
            | 12/14/2011 | -0.10 / -1.01% | 9.90 | 9.90 | 9.70 | 9.80 | 9.80 | 5.13 | 141,500 |   |  |