| 
                 
                    Closing price on 4/22/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    24.50 | 
                 
                
                    | High | 
                    24.90 | 
                 
                
                    | Low | 
                    24.50 | 
                     
                
                    | Volume | 
                    17,300 | 
                                 
                
                    | Split-adjusted Price | 
                    17.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NRC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/22/2019
             | 
            
                -0.20 / -0.81%
             |             
            
                24.50
             |           
            
                24.90
             |               
            
                24.50
             |                           
            
                24.60
             | 
            
                24.72
             |                     
            
                17.22
             |                                 
            
                17,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2019
             | 
            
                0.00 / 0.00%
             |             
            
                24.60
             |           
            
                24.90
             |               
            
                24.60
             |                           
            
                24.80
             | 
            
                24.79
             |                     
            
                17.36
             |                                 
            
                15,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2019
             | 
            
                -0.20 / -0.80%
             |             
            
                24.60
             |           
            
                25.00
             |               
            
                24.50
             |                           
            
                24.80
             | 
            
                24.79
             |                     
            
                17.36
             |                                 
            
                21,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                24.90
             |           
            
                25.10
             |               
            
                24.60
             |                           
            
                25.00
             | 
            
                24.82
             |                     
            
                17.50
             |                                 
            
                36,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                24.50
             |           
            
                25.00
             |               
            
                24.50
             |                           
            
                25.00
             | 
            
                24.79
             |                     
            
                17.50
             |                                 
            
                33,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2019
             | 
            
                -0.10 / -0.40%
             |             
            
                24.60
             |           
            
                25.00
             |               
            
                24.60
             |                           
            
                24.90
             | 
            
                24.79
             |                     
            
                17.43
             |                                 
            
                27,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2019
             | 
            
                +0.40 / +1.63%
             |             
            
                24.60
             |           
            
                25.10
             |               
            
                24.60
             |                           
            
                25.00
             | 
            
                24.79
             |                     
            
                17.50
             |                                 
            
                41,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2019
             | 
            
                -0.50 / -1.99%
             |             
            
                25.30
             |           
            
                25.30
             |               
            
                24.60
             |                           
            
                24.60
             | 
            
                24.68
             |                     
            
                17.22
             |                                 
            
                21,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                25.00
             |           
            
                25.20
             |               
            
                24.80
             |                           
            
                25.10
             | 
            
                24.98
             |                     
            
                17.57
             |                                 
            
                47,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2019
             | 
            
                -0.30 / -1.19%
             |             
            
                25.40
             |           
            
                25.50
             |               
            
                24.80
             |                           
            
                25.00
             | 
            
                25.04
             |                     
            
                17.50
             |                                 
            
                42,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                25.20
             |           
            
                25.50
             |               
            
                24.60
             |                           
            
                25.30
             | 
            
                25.03
             |                     
            
                17.71
             |                                 
            
                64,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2019
             | 
            
                +0.40 / +1.61%
             |             
            
                25.20
             |           
            
                25.70
             |               
            
                24.80
             |                           
            
                25.20
             | 
            
                25.04
             |                     
            
                17.64
             |                                 
            
                47,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2019
             | 
            
                -0.40 / -1.59%
             |             
            
                24.70
             |           
            
                25.30
             |               
            
                24.70
             |                           
            
                24.80
             | 
            
                24.97
             |                     
            
                17.36
             |                                 
            
                25,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                25.20
             |           
            
                25.90
             |               
            
                25.00
             |                           
            
                25.20
             | 
            
                25.28
             |                     
            
                17.64
             |                                 
            
                44,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2019
             | 
            
                +0.70 / +2.87%
             |             
            
                25.00
             |           
            
                25.90
             |               
            
                24.50
             |                           
            
                25.10
             | 
            
                25.16
             |                     
            
                17.57
             |                                 
            
                59,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2019
             | 
            
                -1.00 / -3.94%
             |             
            
                25.10
             |           
            
                26.00
             |               
            
                24.40
             |                           
            
                24.40
             | 
            
                24.85
             |                     
            
                17.08
             |                                 
            
                42,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                25.40
             |           
            
                26.50
             |               
            
                25.00
             |                           
            
                25.40
             | 
            
                25.68
             |                     
            
                17.78
             |                                 
            
                50,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2019
             | 
            
                +0.10 / +0.40%
             |             
            
                25.40
             |           
            
                26.50
             |               
            
                25.00
             |                           
            
                25.30
             | 
            
                25.65
             |                     
            
                17.71
             |                                 
            
                36,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2019
             | 
            
                -2.40 / -8.70%
             |             
            
                25.50
             |           
            
                27.90
             |               
            
                25.20
             |                           
            
                25.20
             | 
            
                25.88
             |                     
            
                17.64
             |                                 
            
                55,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2019
             | 
            
                +0.60 / +2.22%
             |             
            
                25.00
             |           
            
                28.30
             |               
            
                25.00
             |                           
            
                27.60
             | 
            
                25.70
             |                     
            
                19.32
             |                                 
            
                39,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2019
             | 
            
                -1.90 / -6.57%
             |             
            
                28.40
             |           
            
                29.90
             |               
            
                27.00
             |                           
            
                27.00
             | 
            
                28.18
             |                     
            
                18.90
             |                                 
            
                59,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2019
             | 
            
                +0.50 / +1.76%
             |             
            
                28.30
             |           
            
                29.00
             |               
            
                28.30
             |                           
            
                28.90
             | 
            
                28.66
             |                     
            
                20.23
             |                                 
            
                78,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2019
             | 
            
                -0.20 / -0.70%
             |             
            
                28.30
             |           
            
                28.90
             |               
            
                28.30
             |                           
            
                28.40
             | 
            
                28.53
             |                     
            
                19.88
             |                                 
            
                48,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2019
             | 
            
                -1.30 / -4.35%
             |             
            
                29.00
             |           
            
                29.80
             |               
            
                28.30
             |                           
            
                28.60
             | 
            
                28.54
             |                     
            
                20.02
             |                                 
            
                45,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2019
             | 
            
                -0.40 / -1.32%
             |             
            
                30.10
             |           
            
                30.20
             |               
            
                29.00
             |                           
            
                29.90
             | 
            
                29.60
             |                     
            
                20.93
             |                                 
            
                64,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2019
             | 
            
                -0.70 / -2.26%
             |             
            
                30.70
             |           
            
                31.00
             |               
            
                30.00
             |                           
            
                30.30
             | 
            
                30.42
             |                     
            
                21.21
             |                                 
            
                40,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2019
             | 
            
                -0.40 / -1.27%
             |             
            
                31.50
             |           
            
                31.80
             |               
            
                30.90
             |                           
            
                31.00
             | 
            
                31.11
             |                     
            
                21.70
             |                                 
            
                79,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2019
             | 
            
                -0.40 / -1.26%
             |             
            
                31.90
             |           
            
                31.90
             |               
            
                30.90
             |                           
            
                31.40
             | 
            
                31.45
             |                     
            
                21.98
             |                                 
            
                81,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2019
             | 
            
                +0.60 / +1.92%
             |             
            
                31.50
             |           
            
                31.80
             |               
            
                30.10
             |                           
            
                31.80
             | 
            
                31.30
             |                     
            
                22.26
             |                                 
            
                66,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2019
             | 
            
                +2.50 / +8.71%
             |             
            
                28.90
             |           
            
                31.50
             |               
            
                28.90
             |                           
            
                31.20
             | 
            
                29.93
             |                     
            
                21.84
             |                                 
            
                41,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |