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                    Closing price on 8/27/2012
                 |  |  
    
        |           
                
                    | Open | 39.50 |  
                    | High | 39.50 |  
                    | Low | 38.00 |  
                    | Volume | 13,850 |  
                    | Split-adjusted Price | 4.03 |  
                
             | 
 |  IMP Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/27/2012 | -2.00 / -5.00% | 39.50 | 39.50 | 38.00 | 38.00 | 38.00 | 4.03 | 13,850 |   |  
            | 8/24/2012 | +1.00 / +2.56% | 40.00 | 40.00 | 40.00 | 40.00 | 40.00 | 4.24 | 10 |   |  			
            | 8/23/2012 | -0.80 / -2.01% | 39.80 | 39.80 | 38.00 | 39.00 | 39.00 | 4.14 | 160 |   |  
            | 8/22/2012 | -0.50 / -1.24% | 40.30 | 40.30 | 39.80 | 39.80 | 39.80 | 4.22 | 160 |   |  			
            | 8/21/2012 | +1.30 / +3.33% | 37.60 | 40.30 | 37.60 | 40.30 | 40.30 | 4.28 | 370 |   |  
            | 8/20/2012 | 0.00 / 0.00% | 39.50 | 39.50 | 39.00 | 39.00 | 39.00 | 4.14 | 10,600 |   |  			
            | 8/17/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 2,000 |   |  
            | 8/16/2012 | 0.00 / 0.00% | 38.00 | 39.00 | 38.00 | 39.00 | 39.00 | 4.14 | 1,120 |   |  			
            | 8/15/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 50 |   |  
            | 8/14/2012 | -0.80 / -2.01% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 250 |   |  			
            | 8/13/2012 | +1.50 / +3.92% | 38.30 | 39.90 | 38.30 | 39.80 | 39.80 | 4.22 | 640 |   |  
            | 8/10/2012 | -1.60 / -4.01% | 39.80 | 39.80 | 38.30 | 38.30 | 38.30 | 4.06 | 1,950 |   |  			
            | 8/9/2012 | 0.00 / 0.00% | 38.10 | 39.90 | 38.10 | 39.90 | 39.90 | 4.23 | 1,100 |   |  
            | 8/8/2012 | +1.00 / +2.57% | 38.90 | 39.90 | 38.50 | 39.90 | 39.90 | 4.23 | 47,700 |   |  			
            | 8/7/2012 | 0.00 / 0.00% | 38.90 | 38.90 | 38.90 | 38.90 | 38.90 | 4.13 | 0 |   |  
            | 8/6/2012 | +0.90 / +2.37% | 38.00 | 38.90 | 38.00 | 38.90 | 38.90 | 4.13 | 3,210 |   |  			
            | 8/3/2012 | -1.00 / -2.56% | 38.00 | 38.00 | 38.00 | 38.00 | 38.00 | 4.03 | 740 |   |  
            | 8/2/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 0 |   |  			
            | 8/1/2012 | +0.30 / +0.78% | 38.70 | 39.00 | 38.70 | 39.00 | 39.00 | 4.14 | 1,200 |   |  
            | 7/31/2012 | -0.30 / -0.77% | 38.00 | 38.70 | 38.00 | 38.70 | 38.70 | 4.11 | 20 |   |  			
            | 7/30/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 0 |   |  
            | 7/27/2012 | +1.00 / +2.63% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 10 |   |  			
            | 7/26/2012 | -1.00 / -2.56% | 38.50 | 38.90 | 38.00 | 38.00 | 38.00 | 4.03 | 2,500 |   |  
            | 7/25/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 0 |   |  			
            | 7/24/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 1,510 |   |  
            | 7/23/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 1,000 |   |  			
            | 7/20/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 0 |   |  
            | 7/19/2012 | 0.00 / 0.00% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 1,000 |   |  			
            | 7/18/2012 | -0.30 / -0.76% | 39.00 | 39.00 | 39.00 | 39.00 | 39.00 | 4.14 | 7,640 |   |  
            | 7/17/2012 | 0.00 / 0.00% | 39.30 | 39.30 | 39.30 | 39.30 | 39.30 | 4.17 | 4,100 |   |  |