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                    Closing price on 5/18/2018
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        |           
                
                    | Open | 50.80 |  
                    | High | 51.00 |  
                    | Low | 50.50 |  
                    | Volume | 7,550 |  
                    | Split-adjusted Price | 28.54 |  
                
             | 
 |  NNC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/18/2018 | +0.10 / +0.20% | 50.80 | 51.00 | 50.50 | 50.90 | 50.73 | 28.54 | 7,550 |   |  
            | 5/17/2018 | -0.20 / -0.39% | 51.00 | 51.00 | 50.80 | 50.80 | 50.90 | 28.49 | 7,780 |   |  			
            | 5/16/2018 | -0.50 / -0.97% | 51.50 | 51.50 | 50.90 | 51.00 | 51.07 | 28.60 | 27,100 |   |  
            | 5/15/2018 | 0.00 / 0.00% | 51.90 | 51.90 | 51.00 | 51.50 | 51.15 | 28.88 | 13,860 |   |  			
            | 5/14/2018 | -0.40 / -0.77% | 52.30 | 52.30 | 51.00 | 51.50 | 51.25 | 28.88 | 6,790 |   |  
            | 5/11/2018 | +1.30 / +2.57% | 53.00 | 53.30 | 50.40 | 51.90 | 51.03 | 29.10 | 4,370 |   |  			
            | 5/10/2018 | -0.30 / -0.59% | 50.70 | 50.90 | 50.60 | 50.60 | 50.70 | 28.38 | 4,170 |   |  
            | 5/9/2018 | 0.00 / 0.00% | 50.70 | 50.90 | 50.30 | 50.90 | 50.64 | 28.54 | 18,820 |   |  			
            | 5/8/2018 | +0.30 / +0.59% | 50.60 | 50.90 | 50.60 | 50.90 | 50.85 | 28.54 | 4,130 |   |  
            | 5/7/2018 | -0.40 / -0.78% | 50.50 | 51.00 | 50.50 | 50.60 | 50.70 | 28.38 | 4,280 |   |  			
            | 5/4/2018 | +0.50 / +0.99% | 50.20 | 51.00 | 50.20 | 51.00 | 50.43 | 28.60 | 8,170 |   |  
            | 5/3/2018 | -0.60 / -1.17% | 51.00 | 51.00 | 50.00 | 50.50 | 50.42 | 28.32 | 15,330 |   |  			
            | 5/2/2018 | +0.60 / +1.19% | 50.50 | 51.90 | 50.50 | 51.10 | 51.13 | 28.66 | 8,880 |   |  
            | 4/27/2018 | -1.30 / -2.51% | 51.60 | 52.00 | 50.50 | 50.50 | 51.19 | 28.32 | 27,760 |   |  			
            | 4/26/2018 | 0.00 / 0.00% | 52.00 | 52.60 | 51.00 | 51.80 | 51.84 | 29.05 | 44,810 |   |  
            | 4/24/2018 | -1.00 / -1.89% | 51.00 | 52.40 | 51.00 | 51.80 | 51.78 | 29.05 | 28,890 |   |  			
            | 4/23/2018 | -3.30 / -5.88% | 53.50 | 55.50 | 52.80 | 52.80 | 53.27 | 29.61 | 96,430 |   |  
            | 4/20/2018 | +3.50 / +6.65% | 52.60 | 56.10 | 52.30 | 56.10 | 53.19 | 31.46 | 110,190 |   |  			
            | 4/19/2018 | -0.10 / -0.19% | 52.70 | 52.80 | 52.20 | 52.60 | 52.56 | 29.50 | 28,920 |   |  
            | 4/18/2018 | +0.90 / +1.74% | 53.00 | 53.30 | 52.50 | 52.70 | 52.95 | 29.55 | 68,440 |   |  			
            | 4/17/2018 | +1.00 / +1.97% | 52.60 | 52.80 | 51.00 | 51.80 | 52.20 | 29.05 | 48,970 |   |  
            | 4/16/2018 | +3.30 / +6.95% | 50.80 | 50.80 | 50.70 | 50.80 | 50.78 | 28.49 | 100,610 |   |  			
            | 4/13/2018 | +0.05 / +0.11% | 47.40 | 47.95 | 47.40 | 47.50 | 47.49 | 26.64 | 28,870 |   |  
            | 4/12/2018 | -0.20 / -0.42% | 47.40 | 47.45 | 47.30 | 47.45 | 47.36 | 26.61 | 54,350 |   |  			
            | 4/11/2018 | +0.05 / +0.11% | 48.35 | 48.35 | 47.30 | 47.65 | 47.46 | 26.72 | 24,970 |   |  
            | 4/10/2018 | +0.10 / +0.21% | 48.40 | 48.40 | 47.50 | 47.60 | 47.59 | 26.69 | 16,200 |   |  			
            | 4/9/2018 | +0.50 / +1.06% | 47.00 | 47.75 | 47.00 | 47.50 | 47.36 | 26.64 | 29,560 |   |  
            | 4/6/2018 | +0.50 / +1.08% | 46.50 | 47.00 | 46.20 | 47.00 | 46.53 | 26.36 | 44,900 |   |  			
            | 4/5/2018 | -0.20 / -0.43% | 46.50 | 46.70 | 46.30 | 46.50 | 46.55 | 26.08 | 22,730 |   |  
            | 4/4/2018 | -0.10 / -0.21% | 46.70 | 47.00 | 46.60 | 46.70 | 46.71 | 26.19 | 18,990 |   |  |