| 
                 
                    Closing price on 6/3/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    35.80 | 
                 
                
                    | High | 
                    36.00 | 
                 
                
                    | Low | 
                    35.80 | 
                     
                
                    | Volume | 
                    1,640 | 
                                 
                
                    | Split-adjusted Price | 
                    10.62 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
OPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/3/2016
             | 
            
                +0.20 / +0.56%
             |             
            
                35.80
             |           
            
                36.00
             |               
            
                35.80
             |                           
            
                35.90
             | 
            
                35.98
             |                     
            
                10.62
             |                                 
            
                1,640
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2016
             | 
            
                -0.10 / -0.28%
             |             
            
                35.50
             |           
            
                35.70
             |               
            
                35.50
             |                           
            
                35.70
             | 
            
                35.60
             |                     
            
                10.56
             |                                 
            
                1,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2016
             | 
            
                -0.20 / -0.56%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                35.80
             |                           
            
                35.80
             | 
            
                35.85
             |                     
            
                10.59
             |                                 
            
                4,770
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2016
             | 
            
                +0.10 / +0.28%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                10.65
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.90
             |           
            
                35.90
             |               
            
                35.50
             |                           
            
                35.90
             | 
            
                35.69
             |                     
            
                10.62
             |                                 
            
                3,250
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2016
             | 
            
                +0.40 / +1.13%
             |             
            
                35.50
             |           
            
                35.90
             |               
            
                35.50
             |                           
            
                35.90
             | 
            
                35.71
             |                     
            
                10.62
             |                                 
            
                560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                10.50
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2016
             | 
            
                -1.50 / -4.05%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                10.50
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2016
             | 
            
                +1.50 / +4.23%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                10.95
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                10.50
             |                                 
            
                50
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2016
             | 
            
                -0.50 / -1.39%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                10.50
             |                                 
            
                50
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2016
             | 
            
                -0.50 / -1.37%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                34.20
             |                           
            
                36.00
             | 
            
                35.48
             |                     
            
                10.65
             |                                 
            
                1,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                10.80
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.30
             |           
            
                36.50
             |               
            
                36.00
             |                           
            
                36.50
             | 
            
                36.48
             |                     
            
                10.80
             |                                 
            
                6,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2016
             | 
            
                -0.50 / -1.35%
             |             
            
                36.80
             |           
            
                36.80
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.67
             |                     
            
                10.80
             |                                 
            
                27,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2016
             | 
            
                +0.50 / +1.37%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                10.95
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2016
             | 
            
                +0.40 / +1.11%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                10.80
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.10
             |           
            
                36.10
             |               
            
                36.10
             |                           
            
                36.10
             | 
            
                36.10
             |                     
            
                10.68
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2016
             | 
            
                +0.10 / +0.28%
             |             
            
                36.10
             |           
            
                36.20
             |               
            
                36.10
             |                           
            
                36.10
             | 
            
                36.13
             |                     
            
                10.68
             |                                 
            
                1,670
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.00
             |           
            
                36.20
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                10.65
             |                                 
            
                3,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                10.65
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                10.65
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2016
             | 
            
                -0.50 / -1.37%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.08
             |                     
            
                10.65
             |                                 
            
                970
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                10.80
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                37.70
             |           
            
                37.70
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                37.10
             |                     
            
                10.80
             |                                 
            
                28,230
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2016
             | 
            
                +0.50 / +1.39%
             |             
            
                36.50
             |           
            
                38.00
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.88
             |                     
            
                10.80
             |                                 
            
                630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2016
             | 
            
                +1.00 / +2.86%
             |             
            
                35.00
             |           
            
                36.70
             |               
            
                35.00
             |                           
            
                36.00
             | 
            
                36.07
             |                     
            
                10.65
             |                                 
            
                1,220
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2016
             | 
            
                -1.30 / -3.58%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.43
             |                     
            
                10.36
             |                                 
            
                1,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2016
             | 
            
                0.00 / 0.00%
             |             
            
                36.30
             |           
            
                36.30
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.30
             |                     
            
                10.74
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2016
             | 
            
                -0.20 / -0.55%
             |             
            
                36.30
             |           
            
                36.30
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.30
             |                     
            
                10.74
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |