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                    Closing price on 12/17/2018
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        |           
                
                    | Open | 40.50 |  
                    | High | 40.60 |  
                    | Low | 40.10 |  
                    | Volume | 31,500 |  
                    | Split-adjusted Price | 19.64 |  
                
             | 
 |  NRC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/17/2018 | 0.00 / 0.00% | 40.50 | 40.60 | 40.10 | 40.60 | 40.32 | 19.64 | 31,500 |   |  
            | 12/14/2018 | +0.10 / +0.25% | 40.50 | 40.60 | 40.30 | 40.60 | 40.41 | 19.64 | 37,900 |   |  			
            | 12/13/2018 | 0.00 / 0.00% | 40.60 | 40.60 | 40.00 | 40.50 | 40.37 | 19.59 | 117,600 |   |  
            | 12/12/2018 | -0.20 / -0.49% | 40.70 | 40.70 | 40.30 | 40.50 | 40.48 | 19.59 | 32,900 |   |  			
            | 12/11/2018 | 0.00 / 0.00% | 40.70 | 40.70 | 40.30 | 40.70 | 40.50 | 19.69 | 31,400 |   |  
            | 12/10/2018 | -0.10 / -0.25% | 40.80 | 40.80 | 40.40 | 40.70 | 40.55 | 19.69 | 36,800 |   |  			
            | 12/7/2018 | 0.00 / 0.00% | 40.50 | 41.00 | 40.50 | 40.80 | 40.77 | 19.74 | 52,600 |   |  
            | 12/6/2018 | -0.10 / -0.24% | 40.50 | 40.90 | 40.20 | 40.80 | 40.50 | 19.74 | 50,700 |   |  			
            | 12/5/2018 | -0.10 / -0.24% | 40.90 | 41.00 | 40.40 | 40.90 | 40.65 | 19.79 | 63,300 |   |  
            | 12/4/2018 | 0.00 / 0.00% | 41.00 | 41.10 | 40.10 | 41.00 | 40.75 | 19.83 | 48,000 |   |  			
            | 12/3/2018 | +0.20 / +0.49% | 40.80 | 41.00 | 40.40 | 41.00 | 40.69 | 19.83 | 72,700 |   |  
            | 11/30/2018 | +0.20 / +0.49% | 40.60 | 41.00 | 40.60 | 40.80 | 40.78 | 19.74 | 47,900 |   |  			
            | 11/29/2018 | -0.40 / -0.98% | 41.00 | 41.00 | 40.20 | 40.60 | 40.64 | 19.64 | 45,000 |   |  
            | 11/28/2018 | 0.00 / 0.00% | 40.80 | 41.10 | 40.50 | 41.00 | 40.86 | 19.83 | 56,100 |   |  			
            | 11/27/2018 | 0.00 / 0.00% | 41.00 | 41.00 | 40.60 | 41.00 | 40.91 | 19.83 | 49,900 |   |  
            | 11/26/2018 | -0.30 / -0.73% | 41.30 | 41.30 | 40.50 | 41.00 | 40.93 | 19.83 | 47,900 |   |  			
            | 11/23/2018 | +0.30 / +0.73% | 41.00 | 41.80 | 40.60 | 41.30 | 41.03 | 19.98 | 83,100 |   |  
            | 11/22/2018 | 0.00 / 0.00% | 41.00 | 41.00 | 40.50 | 41.00 | 40.69 | 19.83 | 49,700 |   |  			
            | 11/21/2018 | 0.00 / 0.00% | 41.00 | 41.00 | 40.60 | 41.00 | 40.83 | 19.83 | 67,300 |   |  
            | 11/20/2018 | -0.60 / -1.44% | 41.60 | 41.60 | 40.70 | 41.00 | 41.10 | 19.83 | 49,500 |   |  			
            | 11/19/2018 | 0.00 / 0.00% | 41.60 | 41.60 | 41.30 | 41.60 | 41.43 | 20.12 | 48,700 |   |  
            | 11/16/2018 | +0.10 / +0.24% | 41.50 | 41.80 | 41.10 | 41.60 | 41.45 | 20.12 | 50,400 |   |  			
            | 11/15/2018 | -1.90 / -4.38% | 43.40 | 43.40 | 41.50 | 41.50 | 42.13 | 20.08 | 63,900 |   |  
            | 11/14/2018 | +0.10 / +0.23% | 43.30 | 43.50 | 43.00 | 43.40 | 43.25 | 20.03 | 48,500 |   |  			
            | 11/13/2018 | 0.00 / 0.00% | 43.40 | 43.40 | 42.60 | 43.30 | 42.96 | 19.98 | 38,400 |   |  
            | 11/12/2018 | 0.00 / 0.00% | 43.30 | 43.30 | 42.50 | 43.30 | 42.97 | 19.98 | 65,200 |   |  			
            | 11/9/2018 | 0.00 / 0.00% | 43.30 | 43.30 | 42.80 | 43.30 | 43.10 | 19.98 | 51,900 |   |  
            | 11/8/2018 | 0.00 / 0.00% | 43.30 | 43.50 | 43.10 | 43.30 | 43.29 | 19.98 | 49,700 |   |  			
            | 11/7/2018 | -0.20 / -0.46% | 43.50 | 43.60 | 43.30 | 43.30 | 43.47 | 19.98 | 37,500 |   |  
            | 11/6/2018 | 0.00 / 0.00% | 43.50 | 44.00 | 43.00 | 43.50 | 43.62 | 20.07 | 123,400 |   |  |