| 
                 
                    Closing price on 1/13/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.70 | 
                 
                
                    | High | 
                    12.80 | 
                 
                
                    | Low | 
                    12.70 | 
                     
                
                    | Volume | 
                    27,200 | 
                                 
                
                    | Split-adjusted Price | 
                    9.96 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CEN Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/13/2020
             | 
            
                +0.20 / +1.59%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.70
             |                     
            
                9.96
             |                                 
            
                27,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2020
             | 
            
                -0.50 / -3.91%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.57
             |                     
            
                9.57
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2020
             | 
            
                +0.50 / +4.07%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.96
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2020
             | 
            
                -0.50 / -3.91%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.50
             |                     
            
                9.57
             |                                 
            
                8,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2020
             | 
            
                -0.50 / -3.76%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                13.09
             |                     
            
                9.96
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/6/2020
             | 
            
                +0.50 / +3.91%
             |             
            
                13.20
             |           
            
                13.30
             |               
            
                13.20
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                10.35
             |                                 
            
                21,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2020
             | 
            
                0.00 / 0.00%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.96
             |                                 
            
                3,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/2/2020
             | 
            
                +0.10 / +0.79%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.96
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/31/2019
             | 
            
                +0.30 / +2.36%
             |             
            
                12.90
             |           
            
                13.00
             |               
            
                12.60
             |                           
            
                13.00
             | 
            
                12.73
             |                     
            
                10.12
             |                                 
            
                6,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/30/2019
             | 
            
                +0.10 / +0.79%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                13.63
             |                     
            
                9.88
             |                                 
            
                29,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2019
             | 
            
                -0.80 / -5.97%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                9.81
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                10.43
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/25/2019
             | 
            
                +0.40 / +3.08%
             |             
            
                13.30
             |           
            
                13.40
             |               
            
                13.30
             |                           
            
                13.40
             | 
            
                13.39
             |                     
            
                10.43
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2019
             | 
            
                +0.10 / +0.78%
             |             
            
                13.60
             |           
            
                13.70
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.29
             |                     
            
                10.12
             |                                 
            
                13,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2019
             | 
            
                -0.80 / -5.84%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                12.80
             |                           
            
                12.90
             | 
            
                12.96
             |                     
            
                10.04
             |                                 
            
                7,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2019
             | 
            
                -0.10 / -0.75%
             |             
            
                13.70
             |           
            
                14.00
             |               
            
                13.00
             |                           
            
                13.20
             | 
            
                13.72
             |                     
            
                10.27
             |                                 
            
                20,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2019
             | 
            
                -0.40 / -2.92%
             |             
            
                13.60
             |           
            
                13.80
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.72
             |                     
            
                10.35
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2019
             | 
            
                +0.20 / +1.48%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                13.70
             |                           
            
                13.70
             | 
            
                14.10
             |                     
            
                10.66
             |                                 
            
                19,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2019
             | 
            
                +0.40 / +3.05%
             |             
            
                13.30
             |           
            
                14.70
             |               
            
                13.30
             |                           
            
                13.50
             | 
            
                13.67
             |                     
            
                10.51
             |                                 
            
                17,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2019
             | 
            
                -0.40 / -2.96%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                13.00
             |                           
            
                13.10
             | 
            
                13.05
             |                     
            
                10.20
             |                                 
            
                3,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2019
             | 
            
                +0.60 / +4.62%
             |             
            
                13.30
             |           
            
                13.60
             |               
            
                13.30
             |                           
            
                13.60
             | 
            
                13.55
             |                     
            
                10.59
             |                                 
            
                31,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2019
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.20
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.05
             |                     
            
                10.12
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2019
             | 
            
                -0.40 / -2.99%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.03
             |                     
            
                10.12
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2019
             | 
            
                +0.30 / +2.29%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                10.43
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2019
             | 
            
                -0.20 / -1.50%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.00
             |                           
            
                13.10
             | 
            
                13.39
             |                     
            
                10.20
             |                                 
            
                30,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2019
             | 
            
                -0.10 / -0.74%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.10
             |                           
            
                13.40
             | 
            
                13.35
             |                     
            
                10.43
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2019
             | 
            
                +0.20 / +1.50%
             |             
            
                13.20
             |           
            
                13.50
             |               
            
                13.00
             |                           
            
                13.50
             | 
            
                13.10
             |                     
            
                10.51
             |                                 
            
                5,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2019
             | 
            
                -0.10 / -0.75%
             |             
            
                13.20
             |           
            
                13.80
             |               
            
                12.60
             |                           
            
                13.30
             | 
            
                13.37
             |                     
            
                10.35
             |                                 
            
                8,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2019
             | 
            
                +0.20 / +1.52%
             |             
            
                13.20
             |           
            
                14.30
             |               
            
                13.00
             |                           
            
                13.40
             | 
            
                13.49
             |                     
            
                10.43
             |                                 
            
                21,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2019
             | 
            
                -1.10 / -7.69%
             |             
            
                14.30
             |           
            
                14.80
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                14.02
             |                     
            
                10.27
             |                                 
            
                13,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |