| 
                 
                    Closing price on 10/22/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    37.00 | 
                 
                
                    | High | 
                    37.00 | 
                 
                
                    | Low | 
                    36.00 | 
                     
                
                    | Volume | 
                    26,450 | 
                                 
                
                    | Split-adjusted Price | 
                    4.46 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IMP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/22/2013
             | 
            
                -1.20 / -3.23%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                4.46
             |                                 
            
                26,450
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2013
             | 
            
                -0.30 / -0.80%
             |             
            
                35.00
             |           
            
                37.50
             |               
            
                35.00
             |                           
            
                37.20
             | 
            
                37.20
             |                     
            
                4.61
             |                                 
            
                14,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2013
             | 
            
                0.00 / 0.00%
             |             
            
                37.00
             |           
            
                37.50
             |               
            
                37.00
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                4.65
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2013
             | 
            
                -0.40 / -1.06%
             |             
            
                37.50
             |           
            
                37.90
             |               
            
                37.00
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                4.65
             |                                 
            
                13,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2013
             | 
            
                +1.30 / +3.55%
             |             
            
                37.00
             |           
            
                38.50
             |               
            
                36.60
             |                           
            
                37.90
             | 
            
                37.90
             |                     
            
                4.70
             |                                 
            
                19,980
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2013
             | 
            
                -0.20 / -0.54%
             |             
            
                36.60
             |           
            
                37.00
             |               
            
                36.50
             |                           
            
                36.60
             | 
            
                36.60
             |                     
            
                4.54
             |                                 
            
                16,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2013
             | 
            
                -0.70 / -1.87%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                36.60
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                4.56
             |                                 
            
                6,470
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2013
             | 
            
                -0.50 / -1.32%
             |             
            
                38.00
             |           
            
                38.50
             |               
            
                37.50
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                4.65
             |                                 
            
                28,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2013
             | 
            
                +0.50 / +1.33%
             |             
            
                38.20
             |           
            
                38.50
             |               
            
                37.60
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                4.71
             |                                 
            
                46,360
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2013
             | 
            
                +2.40 / +6.84%
             |             
            
                35.20
             |           
            
                37.50
             |               
            
                35.20
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                4.65
             |                                 
            
                55,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                35.10
             |           
            
                35.10
             |               
            
                34.90
             |                           
            
                35.10
             | 
            
                35.10
             |                     
            
                4.35
             |                                 
            
                7,950
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2013
             | 
            
                +0.30 / +0.86%
             |             
            
                34.90
             |           
            
                35.10
             |               
            
                34.90
             |                           
            
                35.10
             | 
            
                35.10
             |                     
            
                4.35
             |                                 
            
                7,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2013
             | 
            
                -0.10 / -0.29%
             |             
            
                35.00
             |           
            
                35.10
             |               
            
                34.80
             |                           
            
                34.80
             | 
            
                34.80
             |                     
            
                4.32
             |                                 
            
                9,850
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2013
             | 
            
                -0.10 / -0.29%
             |             
            
                35.00
             |           
            
                35.40
             |               
            
                34.90
             |                           
            
                34.90
             | 
            
                34.90
             |                     
            
                4.33
             |                                 
            
                2,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2013
             | 
            
                +0.20 / +0.57%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                34.80
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                4.34
             |                                 
            
                6,170
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2013
             | 
            
                -0.60 / -1.69%
             |             
            
                35.40
             |           
            
                35.40
             |               
            
                34.70
             |                           
            
                34.80
             | 
            
                34.80
             |                     
            
                4.32
             |                                 
            
                33,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2013
             | 
            
                +0.20 / +0.57%
             |             
            
                35.30
             |           
            
                35.40
             |               
            
                35.00
             |                           
            
                35.40
             | 
            
                35.40
             |                     
            
                4.39
             |                                 
            
                38,530
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2013
             | 
            
                +0.10 / +0.28%
             |             
            
                35.00
             |           
            
                35.40
             |               
            
                34.90
             |                           
            
                35.20
             | 
            
                35.20
             |                     
            
                4.37
             |                                 
            
                4,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2013
             | 
            
                +0.10 / +0.29%
             |             
            
                34.70
             |           
            
                35.20
             |               
            
                34.60
             |                           
            
                35.10
             | 
            
                35.10
             |                     
            
                4.35
             |                                 
            
                8,110
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2013
             | 
            
                -0.50 / -1.41%
             |             
            
                35.50
             |           
            
                35.60
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                4.34
             |                                 
            
                37,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2013
             | 
            
                -0.40 / -1.11%
             |             
            
                35.50
             |           
            
                35.80
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                4.40
             |                                 
            
                11,960
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2013
             | 
            
                +0.90 / +2.57%
             |             
            
                35.00
             |           
            
                35.90
             |               
            
                34.90
             |                           
            
                35.90
             | 
            
                35.90
             |                     
            
                4.45
             |                                 
            
                14,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2013
             | 
            
                +0.20 / +0.57%
             |             
            
                34.90
             |           
            
                35.00
             |               
            
                34.50
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                4.34
             |                                 
            
                22,950
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2013
             | 
            
                +0.20 / +0.58%
             |             
            
                34.90
             |           
            
                34.90
             |               
            
                34.60
             |                           
            
                34.80
             | 
            
                34.80
             |                     
            
                4.32
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2013
             | 
            
                0.00 / 0.00%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                34.60
             |                           
            
                34.60
             | 
            
                34.60
             |                     
            
                4.29
             |                                 
            
                3,160
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2013
             | 
            
                -1.00 / -2.81%
             |             
            
                35.00
             |           
            
                35.40
             |               
            
                34.40
             |                           
            
                34.60
             | 
            
                34.60
             |                     
            
                4.29
             |                                 
            
                7,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2013
             | 
            
                +0.10 / +0.28%
             |             
            
                34.90
             |           
            
                35.60
             |               
            
                34.90
             |                           
            
                35.60
             | 
            
                35.60
             |                     
            
                4.42
             |                                 
            
                470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2013
             | 
            
                +0.10 / +0.28%
             |             
            
                34.90
             |           
            
                36.00
             |               
            
                34.80
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                4.40
             |                                 
            
                1,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2013
             | 
            
                0.00 / 0.00%
             |             
            
                34.80
             |           
            
                35.40
             |               
            
                34.80
             |                           
            
                35.40
             | 
            
                35.40
             |                     
            
                4.39
             |                                 
            
                1,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2013
             | 
            
                +0.10 / +0.28%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                34.80
             |                           
            
                35.40
             | 
            
                35.40
             |                     
            
                4.39
             |                                 
            
                9,280
             |  
            
                 
             |                                                              
             
    
         
    
    
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