| 
                 
                    Closing price on 10/21/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    29.00 | 
                 
                
                    | High | 
                    29.70 | 
                 
                
                    | Low | 
                    28.50 | 
                     
                
                    | Volume | 
                    26,160 | 
                                 
                
                    | Split-adjusted Price | 
                    8.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
OPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/21/2015
             | 
            
                +0.80 / +2.88%
             |             
            
                29.00
             |           
            
                29.70
             |               
            
                28.50
             |                           
            
                28.60
             | 
            
                29.55
             |                     
            
                8.22
             |                                 
            
                26,160
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2015
             | 
            
                -1.20 / -4.14%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                27.80
             |                           
            
                27.80
             | 
            
                28.13
             |                     
            
                7.99
             |                                 
            
                320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2015
             | 
            
                +0.30 / +1.05%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.25
             |                     
            
                8.34
             |                                 
            
                630
             |            
            
                 
             |                                       
         
    
        
            | 
                10/16/2015
             | 
            
                +0.20 / +0.70%
             |             
            
                28.20
             |           
            
                28.70
             |               
            
                28.20
             |                           
            
                28.70
             | 
            
                28.33
             |                     
            
                8.25
             |                                 
            
                4,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/15/2015
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                28.70
             |               
            
                27.50
             |                           
            
                28.50
             | 
            
                27.69
             |                     
            
                8.20
             |                                 
            
                650
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2015
             | 
            
                -0.50 / -1.72%
             |             
            
                28.60
             |           
            
                28.60
             |               
            
                28.40
             |                           
            
                28.50
             | 
            
                28.53
             |                     
            
                8.20
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2015
             | 
            
                +0.50 / +1.75%
             |             
            
                28.00
             |           
            
                29.00
             |               
            
                28.00
             |                           
            
                29.00
             | 
            
                28.35
             |                     
            
                8.34
             |                                 
            
                1,270
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2015
             | 
            
                -0.30 / -1.04%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                29.00
             |                     
            
                8.20
             |                                 
            
                370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/9/2015
             | 
            
                +0.40 / +1.41%
             |             
            
                27.50
             |           
            
                28.80
             |               
            
                27.50
             |                           
            
                28.80
             | 
            
                27.62
             |                     
            
                8.28
             |                                 
            
                3,150
             |            
            
                 
             |                                       
         
    
        
            | 
                10/8/2015
             | 
            
                -0.10 / -0.35%
             |             
            
                28.30
             |           
            
                28.40
             |               
            
                28.00
             |                           
            
                28.40
             | 
            
                28.28
             |                     
            
                8.17
             |                                 
            
                2,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/7/2015
             | 
            
                +0.20 / +0.71%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.40
             |                           
            
                28.50
             | 
            
                28.48
             |                     
            
                8.20
             |                                 
            
                2,210
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2015
             | 
            
                -0.50 / -1.74%
             |             
            
                27.00
             |           
            
                28.50
             |               
            
                27.00
             |                           
            
                28.30
             | 
            
                27.98
             |                     
            
                8.14
             |                                 
            
                1,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2015
             | 
            
                -0.20 / -0.69%
             |             
            
                27.20
             |           
            
                28.90
             |               
            
                27.20
             |                           
            
                28.80
             | 
            
                27.27
             |                     
            
                8.28
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/2/2015
             | 
            
                -0.30 / -1.02%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.25
             |                     
            
                8.34
             |                                 
            
                270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/1/2015
             | 
            
                0.00 / 0.00%
             |             
            
                29.70
             |           
            
                29.70
             |               
            
                29.30
             |                           
            
                29.30
             | 
            
                29.50
             |                     
            
                8.43
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2015
             | 
            
                -3.80 / -11.48%
             |             
            
                29.70
             |           
            
                29.70
             |               
            
                29.30
             |                           
            
                29.30
             | 
            
                29.50
             |                     
            
                8.43
             |                                 
            
                2,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/29/2015
             | 
            
                -0.10 / -0.30%
             |             
            
                33.20
             |           
            
                33.20
             |               
            
                32.80
             |                           
            
                33.10
             | 
            
                33.13
             |                     
            
                8.19
             |                                 
            
                32,120
             |            
            
                 
             |                                       
         
    
        
            | 
                9/28/2015
             | 
            
                +0.40 / +1.22%
             |             
            
                32.80
             |           
            
                34.00
             |               
            
                32.70
             |                           
            
                33.20
             | 
            
                33.25
             |                     
            
                8.21
             |                                 
            
                23,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/25/2015
             | 
            
                +0.10 / +0.31%
             |             
            
                32.70
             |           
            
                33.00
             |               
            
                32.70
             |                           
            
                32.80
             | 
            
                32.86
             |                     
            
                8.12
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/24/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                34.80
             |           
            
                35.00
             |               
            
                32.70
             |                           
            
                32.70
             | 
            
                33.80
             |                     
            
                8.09
             |                                 
            
                280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/23/2015
             | 
            
                +0.90 / +2.81%
             |             
            
                32.90
             |           
            
                32.90
             |               
            
                32.90
             |                           
            
                32.90
             | 
            
                32.90
             |                     
            
                8.14
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                9/22/2015
             | 
            
                -0.90 / -2.74%
             |             
            
                32.90
             |           
            
                32.90
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.17
             |                     
            
                7.92
             |                                 
            
                8,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/21/2015
             | 
            
                -1.70 / -4.91%
             |             
            
                34.60
             |           
            
                34.60
             |               
            
                32.80
             |                           
            
                32.90
             | 
            
                33.73
             |                     
            
                8.14
             |                                 
            
                460
             |            
            
                 
             |                                       
         
    
        
            | 
                9/18/2015
             | 
            
                +2.10 / +6.46%
             |             
            
                32.70
             |           
            
                34.70
             |               
            
                32.70
             |                           
            
                34.60
             | 
            
                33.56
             |                     
            
                8.31
             |                                 
            
                2,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/17/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                32.60
             |           
            
                32.70
             |               
            
                32.50
             |                           
            
                32.50
             | 
            
                32.53
             |                     
            
                7.81
             |                                 
            
                37,260
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.70
             |           
            
                32.80
             |               
            
                32.50
             |                           
            
                32.70
             | 
            
                32.58
             |                     
            
                7.86
             |                                 
            
                16,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                32.90
             |           
            
                33.00
             |               
            
                32.50
             |                           
            
                32.70
             | 
            
                32.58
             |                     
            
                7.86
             |                                 
            
                15,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2015
             | 
            
                -0.10 / -0.30%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                32.90
             |                           
            
                32.90
             | 
            
                32.96
             |                     
            
                7.90
             |                                 
            
                20,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2015
             | 
            
                +0.10 / +0.30%
             |             
            
                32.90
             |           
            
                33.00
             |               
            
                32.90
             |                           
            
                33.00
             | 
            
                32.97
             |                     
            
                7.93
             |                                 
            
                1,850
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2015
             | 
            
                -0.10 / -0.30%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                32.50
             |                           
            
                32.90
             | 
            
                32.97
             |                     
            
                7.90
             |                                 
            
                32,640
             |  
            
                 
             |                                                              
             
    
         
    
    
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