| 
                 
                    Closing price on 11/22/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    46.80 | 
                 
                
                    | High | 
                    46.80 | 
                 
                
                    | Low | 
                    46.80 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    4.69 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IMP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                46.80
             |           
            
                46.80
             |               
            
                46.80
             |                           
            
                46.80
             | 
            
                46.80
             |                     
            
                4.69
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                46.80
             |           
            
                46.80
             |               
            
                46.80
             |                           
            
                46.80
             | 
            
                46.80
             |                     
            
                4.69
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                46.80
             |           
            
                46.80
             |               
            
                46.80
             |                           
            
                46.80
             | 
            
                46.80
             |                     
            
                4.69
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2011
             | 
            
                -2.40 / -4.88%
             |             
            
                46.80
             |           
            
                46.80
             |               
            
                46.80
             |                           
            
                46.80
             | 
            
                46.80
             |                     
            
                4.69
             |                                 
            
                50
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2011
             | 
            
                +2.00 / +4.24%
             |             
            
                49.20
             |           
            
                49.20
             |               
            
                49.20
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                4.93
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2011
             | 
            
                +2.20 / +4.89%
             |             
            
                45.00
             |           
            
                47.20
             |               
            
                45.00
             |                           
            
                47.20
             | 
            
                47.20
             |                     
            
                4.73
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                3,920
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                10,620
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                6,210
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                43.10
             |           
            
                45.00
             |               
            
                43.10
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                1,150
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                6,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2011
             | 
            
                +0.50 / +1.12%
             |             
            
                44.50
             |           
            
                45.00
             |               
            
                44.50
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                3,010
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2011
             | 
            
                -0.50 / -1.11%
             |             
            
                44.50
             |           
            
                44.50
             |               
            
                44.50
             |                           
            
                44.50
             | 
            
                44.50
             |                     
            
                4.46
             |                                 
            
                640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                1,890
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                2,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/17/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2011
             | 
            
                -0.50 / -1.10%
             |             
            
                45.00
             |           
            
                45.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                4.51
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |