| 
                 
                    Closing price on 3/21/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    28.30 | 
                 
                
                    | High | 
                    29.00 | 
                 
                
                    | Low | 
                    28.30 | 
                     
                
                    | Volume | 
                    78,500 | 
                                 
                
                    | Split-adjusted Price | 
                    20.23 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NRC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2019
             | 
            
                +0.10 / +0.35%
             |             
            
                28.50
             |           
            
                28.90
             |               
            
                28.00
             |                           
            
                28.70
             | 
            
                28.64
             |                     
            
                20.09
             |                                 
            
                89,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2019
             | 
            
                +1.20 / +4.38%
             |             
            
                27.90
             |           
            
                28.60
             |               
            
                27.30
             |                           
            
                28.60
             | 
            
                28.17
             |                     
            
                20.02
             |                                 
            
                66,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                27.40
             |           
            
                27.50
             |               
            
                26.80
             |                           
            
                27.40
             | 
            
                27.09
             |                     
            
                19.18
             |                                 
            
                77,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2019
             | 
            
                -0.40 / -1.44%
             |             
            
                27.40
             |           
            
                27.90
             |               
            
                27.10
             |                           
            
                27.40
             | 
            
                27.40
             |                     
            
                19.18
             |                                 
            
                89,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2019
             | 
            
                +0.80 / +2.96%
             |             
            
                27.20
             |           
            
                29.70
             |               
            
                27.20
             |                           
            
                27.80
             | 
            
                27.71
             |                     
            
                19.46
             |                                 
            
                91,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2019
             | 
            
                -8.60 / -24.16%
             |             
            
                27.00
             |           
            
                27.00
             |               
            
                26.00
             |                           
            
                27.00
             | 
            
                26.80
             |                     
            
                18.90
             |                                 
            
                102,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2019
             | 
            
                -0.40 / -1.11%
             |             
            
                34.60
             |           
            
                36.00
             |               
            
                32.50
             |                           
            
                35.60
             | 
            
                34.17
             |                     
            
                17.22
             |                                 
            
                444,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2019
             | 
            
                0.00 / 0.00%
             |             
            
                36.10
             |           
            
                36.80
             |               
            
                34.80
             |                           
            
                36.00
             | 
            
                35.72
             |                     
            
                17.42
             |                                 
            
                121,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                36.20
             |           
            
                36.20
             |               
            
                34.60
             |                           
            
                36.00
             | 
            
                35.10
             |                     
            
                17.42
             |                                 
            
                110,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2019
             | 
            
                +0.70 / +1.98%
             |             
            
                35.50
             |           
            
                36.00
             |               
            
                35.40
             |                           
            
                36.00
             | 
            
                35.69
             |                     
            
                17.42
             |                                 
            
                71,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2019
             | 
            
                +0.40 / +1.15%
             |             
            
                35.20
             |           
            
                35.30
             |               
            
                34.50
             |                           
            
                35.30
             | 
            
                35.05
             |                     
            
                17.08
             |                                 
            
                56,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2019
             | 
            
                -0.10 / -0.29%
             |             
            
                34.80
             |           
            
                35.20
             |               
            
                34.50
             |                           
            
                34.90
             | 
            
                34.87
             |                     
            
                16.88
             |                                 
            
                38,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/20/2019
             | 
            
                -0.10 / -0.28%
             |             
            
                35.30
             |           
            
                36.40
             |               
            
                34.30
             |                           
            
                35.00
             | 
            
                34.90
             |                     
            
                16.93
             |                                 
            
                31,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/19/2019
             | 
            
                +0.30 / +0.86%
             |             
            
                34.80
             |           
            
                36.30
             |               
            
                34.70
             |                           
            
                35.10
             | 
            
                35.29
             |                     
            
                16.98
             |                                 
            
                28,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2019
             | 
            
                +0.20 / +0.58%
             |             
            
                34.80
             |           
            
                35.80
             |               
            
                33.70
             |                           
            
                34.80
             | 
            
                34.65
             |                     
            
                16.84
             |                                 
            
                70,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2019
             | 
            
                -0.50 / -1.42%
             |             
            
                35.10
             |           
            
                35.20
             |               
            
                34.00
             |                           
            
                34.60
             | 
            
                34.62
             |                     
            
                16.74
             |                                 
            
                24,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2019
             | 
            
                +0.10 / +0.29%
             |             
            
                35.00
             |           
            
                35.10
             |               
            
                34.30
             |                           
            
                35.10
             | 
            
                34.79
             |                     
            
                16.98
             |                                 
            
                31,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2019
             | 
            
                -0.80 / -2.23%
             |             
            
                35.80
             |           
            
                36.80
             |               
            
                34.50
             |                           
            
                35.00
             | 
            
                35.67
             |                     
            
                16.93
             |                                 
            
                37,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2019
             | 
            
                -0.30 / -0.83%
             |             
            
                36.10
             |           
            
                36.80
             |               
            
                34.50
             |                           
            
                35.80
             | 
            
                35.73
             |                     
            
                17.32
             |                                 
            
                37,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2019
             | 
            
                0.00 / 0.00%
             |             
            
                36.30
             |           
            
                36.80
             |               
            
                34.70
             |                           
            
                36.10
             | 
            
                35.91
             |                     
            
                17.46
             |                                 
            
                39,210
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2019
             | 
            
                -0.10 / -0.28%
             |             
            
                35.50
             |           
            
                36.80
             |               
            
                35.50
             |                           
            
                36.10
             | 
            
                36.07
             |                     
            
                17.46
             |                                 
            
                36,600
             |  
            
                 
             |                                                              
             
    
         
    
    
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