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                    Closing price on 2/28/2012
                 |  |  
    
        |           
                
                    | Open | 12.00 |  
                    | High | 12.20 |  
                    | Low | 11.30 |  
                    | Volume | 150,300 |  
                    | Split-adjusted Price | 6.99 |  
                
             | 
 |  PVE Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 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 |   |  |