| 
                 
                    Closing price on 6/6/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.80 | 
                 
                
                    | High | 
                    17.90 | 
                 
                
                    | Low | 
                    17.70 | 
                     
                
                    | Volume | 
                    193,400 | 
                                 
                
                    | Split-adjusted Price | 
                    16.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/6/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.70
             |                           
            
                17.80
             | 
            
                17.81
             |                     
            
                16.22
             |                                 
            
                193,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2016
             | 
            
                -0.20 / -1.11%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.95
             |                     
            
                16.22
             |                                 
            
                201,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2016
             | 
            
                +0.10 / +0.56%
             |             
            
                17.90
             |           
            
                18.00
             |               
            
                17.80
             |                           
            
                18.00
             | 
            
                17.88
             |                     
            
                16.40
             |                                 
            
                204,900
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.90
             |           
            
                18.00
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.91
             |                     
            
                16.31
             |                                 
            
                195,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2016
             | 
            
                +0.10 / +0.56%
             |             
            
                17.80
             |           
            
                18.00
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.87
             |                     
            
                16.31
             |                                 
            
                210,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2016
             | 
            
                +0.10 / +0.56%
             |             
            
                17.70
             |           
            
                17.90
             |               
            
                17.60
             |                           
            
                17.80
             | 
            
                17.77
             |                     
            
                16.22
             |                                 
            
                202,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.70
             |           
            
                17.80
             |               
            
                17.60
             |                           
            
                17.70
             | 
            
                17.72
             |                     
            
                16.13
             |                                 
            
                205,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.70
             |           
            
                17.80
             |               
            
                17.50
             |                           
            
                17.70
             | 
            
                17.70
             |                     
            
                16.13
             |                                 
            
                199,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.70
             |           
            
                17.90
             |               
            
                17.70
             |                           
            
                17.70
             | 
            
                17.78
             |                     
            
                16.13
             |                                 
            
                213,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.70
             |           
            
                17.80
             |               
            
                17.60
             |                           
            
                17.70
             | 
            
                17.70
             |                     
            
                16.13
             |                                 
            
                224,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.70
             |           
            
                17.80
             |               
            
                17.50
             |                           
            
                17.70
             | 
            
                17.66
             |                     
            
                16.13
             |                                 
            
                213,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2016
             | 
            
                +0.10 / +0.57%
             |             
            
                17.60
             |           
            
                17.70
             |               
            
                17.50
             |                           
            
                17.70
             | 
            
                17.62
             |                     
            
                16.13
             |                                 
            
                225,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2016
             | 
            
                -0.20 / -1.12%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.80
             |                     
            
                16.04
             |                                 
            
                279,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.82
             |                     
            
                16.22
             |                                 
            
                270,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.70
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                16.22
             |                                 
            
                245,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.80
             |               
            
                17.60
             |                           
            
                17.80
             | 
            
                17.70
             |                     
            
                16.22
             |                                 
            
                201,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.70
             |                           
            
                17.80
             | 
            
                17.81
             |                     
            
                16.22
             |                                 
            
                178,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.70
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                16.22
             |                                 
            
                203,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2016
             | 
            
                +0.10 / +0.56%
             |             
            
                17.70
             |           
            
                17.90
             |               
            
                17.50
             |                           
            
                17.80
             | 
            
                17.72
             |                     
            
                16.22
             |                                 
            
                236,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2016
             | 
            
                -0.10 / -0.56%
             |             
            
                17.80
             |           
            
                17.80
             |               
            
                17.50
             |                           
            
                17.70
             | 
            
                17.68
             |                     
            
                16.13
             |                                 
            
                234,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2016
             | 
            
                +0.10 / +0.56%
             |             
            
                17.70
             |           
            
                18.10
             |               
            
                17.30
             |                           
            
                17.80
             | 
            
                17.79
             |                     
            
                16.22
             |                                 
            
                353,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2016
             | 
            
                -0.10 / -0.56%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.60
             |                           
            
                17.70
             | 
            
                17.77
             |                     
            
                16.13
             |                                 
            
                310,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.80
             |           
            
                18.00
             |               
            
                17.10
             |                           
            
                17.80
             | 
            
                17.70
             |                     
            
                16.22
             |                                 
            
                320,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2016
             | 
            
                +0.20 / +1.14%
             |             
            
                17.60
             |           
            
                17.90
             |               
            
                17.50
             |                           
            
                17.80
             | 
            
                17.62
             |                     
            
                16.22
             |                                 
            
                288,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2016
             | 
            
                -0.10 / -0.56%
             |             
            
                17.70
             |           
            
                17.90
             |               
            
                17.10
             |                           
            
                17.60
             | 
            
                17.62
             |                     
            
                16.04
             |                                 
            
                378,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2016
             | 
            
                +0.40 / +2.31%
             |             
            
                17.30
             |           
            
                17.90
             |               
            
                17.10
             |                           
            
                17.70
             | 
            
                17.48
             |                     
            
                16.13
             |                                 
            
                565,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2016
             | 
            
                -0.10 / -0.57%
             |             
            
                17.40
             |           
            
                17.80
             |               
            
                17.30
             |                           
            
                17.30
             | 
            
                17.52
             |                     
            
                15.76
             |                                 
            
                280,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.40
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.40
             | 
            
                17.27
             |                     
            
                15.85
             |                                 
            
                312,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2016
             | 
            
                -0.30 / -1.69%
             |             
            
                17.60
             |           
            
                17.70
             |               
            
                17.30
             |                           
            
                17.40
             | 
            
                17.51
             |                     
            
                15.85
             |                                 
            
                209,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2016
             | 
            
                +0.60 / +3.51%
             |             
            
                16.80
             |           
            
                17.90
             |               
            
                16.70
             |                           
            
                17.70
             | 
            
                17.06
             |                     
            
                16.13
             |                                 
            
                276,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |