| 
                 
                    Closing price on 2/21/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.10 | 
                 
                
                    | High | 
                    17.40 | 
                 
                
                    | Low | 
                    15.10 | 
                     
                
                    | Volume | 
                    94,100 | 
                                 
                
                    | Split-adjusted Price | 
                    12.53 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CEN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/21/2019
             | 
            
                -0.90 / -5.29%
             |             
            
                17.10
             |           
            
                17.40
             |               
            
                15.10
             |                           
            
                16.10
             | 
            
                16.98
             |                     
            
                12.53
             |                                 
            
                94,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/20/2019
             | 
            
                +0.50 / +3.03%
             |             
            
                16.60
             |           
            
                17.50
             |               
            
                16.50
             |                           
            
                17.00
             | 
            
                17.11
             |                     
            
                13.23
             |                                 
            
                103,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/19/2019
             | 
            
                +0.30 / +1.85%
             |             
            
                16.10
             |           
            
                17.40
             |               
            
                16.10
             |                           
            
                16.50
             | 
            
                16.71
             |                     
            
                12.84
             |                                 
            
                114,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2019
             | 
            
                +1.20 / +8.00%
             |             
            
                15.20
             |           
            
                16.20
             |               
            
                15.20
             |                           
            
                16.20
             | 
            
                15.79
             |                     
            
                12.61
             |                                 
            
                124,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2019
             | 
            
                -0.10 / -0.66%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                14.80
             |                           
            
                15.10
             | 
            
                14.95
             |                     
            
                11.75
             |                                 
            
                45,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2019
             | 
            
                +0.10 / +0.66%
             |             
            
                15.20
             |           
            
                15.30
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.14
             |                     
            
                11.83
             |                                 
            
                37,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2019
             | 
            
                +0.10 / +0.67%
             |             
            
                15.10
             |           
            
                15.50
             |               
            
                15.00
             |                           
            
                15.10
             | 
            
                15.13
             |                     
            
                11.75
             |                                 
            
                98,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2019
             | 
            
                +0.10 / +0.67%
             |             
            
                15.00
             |           
            
                15.20
             |               
            
                14.90
             |                           
            
                15.00
             | 
            
                15.00
             |                     
            
                11.67
             |                                 
            
                110,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2019
             | 
            
                +0.40 / +2.76%
             |             
            
                14.70
             |           
            
                15.20
             |               
            
                14.70
             |                           
            
                14.90
             | 
            
                14.82
             |                     
            
                11.60
             |                                 
            
                23,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2019
             | 
            
                +0.10 / +0.70%
             |             
            
                14.60
             |           
            
                14.60
             |               
            
                13.80
             |                           
            
                14.40
             | 
            
                14.51
             |                     
            
                11.21
             |                                 
            
                19,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2019
             | 
            
                -0.20 / -1.38%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.20
             |                           
            
                14.30
             | 
            
                14.32
             |                     
            
                11.13
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.50
             |                           
            
                14.50
             | 
            
                14.66
             |                     
            
                11.29
             |                                 
            
                9,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2019
             | 
            
                -0.20 / -1.36%
             |             
            
                14.40
             |           
            
                15.00
             |               
            
                14.40
             |                           
            
                14.50
             | 
            
                14.84
             |                     
            
                11.29
             |                                 
            
                32,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2019
             | 
            
                -0.30 / -2.00%
             |             
            
                14.50
             |           
            
                14.70
             |               
            
                14.40
             |                           
            
                14.70
             | 
            
                14.41
             |                     
            
                11.44
             |                                 
            
                6,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2019
             | 
            
                +0.10 / +0.68%
             |             
            
                15.20
             |           
            
                15.30
             |               
            
                14.60
             |                           
            
                14.80
             | 
            
                14.98
             |                     
            
                11.52
             |                                 
            
                8,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2019
             | 
            
                -0.10 / -0.68%
             |             
            
                15.10
             |           
            
                15.40
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                15.18
             |                     
            
                11.44
             |                                 
            
                33,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/23/2019
             | 
            
                -0.10 / -0.67%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                14.50
             |                           
            
                14.80
             | 
            
                14.96
             |                     
            
                11.52
             |                                 
            
                19,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2019
             | 
            
                +0.10 / +0.68%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                14.50
             |                           
            
                14.90
             | 
            
                14.80
             |                     
            
                11.60
             |                                 
            
                20,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2019
             | 
            
                -0.40 / -2.63%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                14.70
             |                           
            
                14.80
             | 
            
                15.31
             |                     
            
                11.52
             |                                 
            
                24,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2019
             | 
            
                +0.30 / +2.03%
             |             
            
                15.00
             |           
            
                15.40
             |               
            
                14.80
             |                           
            
                15.10
             | 
            
                15.23
             |                     
            
                11.75
             |                                 
            
                38,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2019
             | 
            
                -0.20 / -1.33%
             |             
            
                14.80
             |           
            
                15.00
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.84
             |                     
            
                11.52
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2019
             | 
            
                0.00 / 0.00%
             |             
            
                15.40
             |           
            
                15.60
             |               
            
                14.70
             |                           
            
                15.00
             | 
            
                15.46
             |                     
            
                11.67
             |                                 
            
                22,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2019
             | 
            
                -0.40 / -2.60%
             |             
            
                14.80
             |           
            
                15.00
             |               
            
                14.60
             |                           
            
                15.00
             | 
            
                14.75
             |                     
            
                11.67
             |                                 
            
                6,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                15.40
             |           
            
                15.80
             |               
            
                15.00
             |                           
            
                15.40
             | 
            
                15.66
             |                     
            
                11.99
             |                                 
            
                29,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2019
             | 
            
                +0.10 / +0.66%
             |             
            
                15.20
             |           
            
                15.70
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.42
             |                     
            
                11.83
             |                                 
            
                34,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2019
             | 
            
                -0.10 / -0.66%
             |             
            
                14.70
             |           
            
                15.20
             |               
            
                14.40
             |                           
            
                15.10
             | 
            
                15.03
             |                     
            
                11.75
             |                                 
            
                70,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2019
             | 
            
                -0.10 / -0.65%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                14.70
             |                           
            
                15.20
             | 
            
                14.97
             |                     
            
                11.83
             |                                 
            
                29,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2019
             | 
            
                +0.10 / +0.66%
             |             
            
                16.00
             |           
            
                16.90
             |               
            
                15.00
             |                           
            
                15.30
             | 
            
                16.26
             |                     
            
                11.91
             |                                 
            
                31,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2019
             | 
            
                +0.20 / +1.33%
             |             
            
                15.20
             |           
            
                15.80
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.47
             |                     
            
                11.83
             |                                 
            
                24,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2019
             | 
            
                -0.60 / -3.95%
             |             
            
                15.10
             |           
            
                15.40
             |               
            
                14.50
             |                           
            
                14.60
             | 
            
                14.97
             |                     
            
                11.36
             |                                 
            
                12,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |