| 
                 
                    Closing price on 3/17/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    34.10 | 
                 
                
                    | High | 
                    35.80 | 
                 
                
                    | Low | 
                    34.10 | 
                     
                
                    | Volume | 
                    13,310 | 
                                 
                
                    | Split-adjusted Price | 
                    10.59 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
OPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/17/2016
             | 
            
                +1.80 / +5.29%
             |             
            
                34.10
             |           
            
                35.80
             |               
            
                34.10
             |                           
            
                35.80
             | 
            
                35.69
             |                     
            
                10.59
             |                                 
            
                13,310
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2016
             | 
            
                -1.60 / -4.49%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.25
             |                     
            
                10.06
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.60
             |           
            
                35.60
             |               
            
                35.60
             |                           
            
                35.60
             | 
            
                35.60
             |                     
            
                10.53
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                36.50
             |               
            
                35.50
             |                           
            
                35.60
             | 
            
                35.88
             |                     
            
                10.53
             |                                 
            
                1,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2016
             | 
            
                -0.70 / -1.93%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                35.50
             |                           
            
                35.60
             | 
            
                35.78
             |                     
            
                10.53
             |                                 
            
                130
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2016
             | 
            
                +0.80 / +2.25%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.49
             |                     
            
                10.74
             |                                 
            
                220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2016
             | 
            
                +0.20 / +0.57%
             |             
            
                35.30
             |           
            
                35.70
             |               
            
                35.30
             |                           
            
                35.50
             | 
            
                35.47
             |                     
            
                10.50
             |                                 
            
                15,760
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2016
             | 
            
                -0.40 / -1.12%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                35.30
             |                           
            
                35.30
             | 
            
                35.90
             |                     
            
                10.45
             |                                 
            
                150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2016
             | 
            
                -1.30 / -3.51%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                35.50
             |                           
            
                35.70
             | 
            
                35.56
             |                     
            
                10.56
             |                                 
            
                450
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2016
             | 
            
                0.00 / 0.00%
             |             
            
                37.00
             |           
            
                37.10
             |               
            
                36.10
             |                           
            
                37.00
             | 
            
                36.79
             |                     
            
                10.95
             |                                 
            
                101,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/3/2016
             | 
            
                0.00 / 0.00%
             |             
            
                37.10
             |           
            
                37.10
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.10
             |                     
            
                10.95
             |                                 
            
                920
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2016
             | 
            
                +1.00 / +2.78%
             |             
            
                36.90
             |           
            
                37.00
             |               
            
                36.10
             |                           
            
                37.00
             | 
            
                36.89
             |                     
            
                10.95
             |                                 
            
                17,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2016
             | 
            
                -0.50 / -1.37%
             |             
            
                36.80
             |           
            
                37.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.46
             |                     
            
                10.65
             |                                 
            
                7,790
             |            
            
                 
             |                                       
         
    
        
            | 
                2/29/2016
             | 
            
                +1.50 / +4.29%
             |             
            
                34.30
             |           
            
                36.50
             |               
            
                34.30
             |                           
            
                36.50
             | 
            
                35.52
             |                     
            
                10.80
             |                                 
            
                22,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.50
             |                           
            
                35.00
             | 
            
                34.84
             |                     
            
                10.36
             |                                 
            
                2,870
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                10.36
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2016
             | 
            
                +0.50 / +1.45%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.90
             |                           
            
                35.00
             | 
            
                34.97
             |                     
            
                10.36
             |                                 
            
                7,750
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2016
             | 
            
                -0.30 / -0.86%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.00
             |                           
            
                34.50
             | 
            
                34.02
             |                     
            
                10.21
             |                                 
            
                7,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2016
             | 
            
                0.00 / 0.00%
             |             
            
                34.90
             |           
            
                34.90
             |               
            
                34.80
             |                           
            
                34.80
             | 
            
                34.85
             |                     
            
                10.30
             |                                 
            
                60
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2016
             | 
            
                +0.20 / +0.58%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.80
             |                           
            
                34.80
             | 
            
                34.90
             |                     
            
                10.30
             |                                 
            
                910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2016
             | 
            
                -0.40 / -1.14%
             |             
            
                34.50
             |           
            
                35.00
             |               
            
                33.50
             |                           
            
                34.60
             | 
            
                34.11
             |                     
            
                10.24
             |                                 
            
                3,870
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2016
             | 
            
                0.00 / 0.00%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.00
             |                           
            
                35.00
             | 
            
                34.62
             |                     
            
                10.36
             |                                 
            
                260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2016
             | 
            
                -0.40 / -1.13%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                10.36
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2016
             | 
            
                +0.40 / +1.14%
             |             
            
                35.70
             |           
            
                35.70
             |               
            
                35.40
             |                           
            
                35.40
             | 
            
                35.55
             |                     
            
                10.18
             |                                 
            
                1,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2016
             | 
            
                +1.00 / +2.94%
             |             
            
                34.20
             |           
            
                35.00
             |               
            
                34.20
             |                           
            
                35.00
             | 
            
                34.60
             |                     
            
                10.06
             |                                 
            
                560
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2016
             | 
            
                0.00 / 0.00%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                9.78
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2016
             | 
            
                -1.00 / -2.86%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                9.78
             |                                 
            
                650
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2016
             | 
            
                +0.10 / +0.29%
             |             
            
                34.90
             |           
            
                35.50
             |               
            
                34.90
             |                           
            
                35.00
             | 
            
                35.03
             |                     
            
                10.06
             |                                 
            
                1,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                34.90
             |           
            
                34.90
             |               
            
                34.90
             |                           
            
                34.90
             | 
            
                34.90
             |                     
            
                10.04
             |                                 
            
                230
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2016
             | 
            
                +1.80 / +5.44%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.90
             |                           
            
                34.90
             | 
            
                34.90
             |                     
            
                10.04
             |                                 
            
                510
             |  
            
                 
             |                                                              
             
    
         
    
    
 |