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            | 
                    Closing price on 2/26/2018
                 |  |  
    
        |           
                
                    | Open | 51.70 |  
                    | High | 51.90 |  
                    | Low | 51.60 |  
                    | Volume | 40,850 |  
                    | Split-adjusted Price | 27.41 |  
                
             | 
 |  NNC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/26/2018 | +0.20 / +0.39% | 51.70 | 51.90 | 51.60 | 51.90 | 51.77 | 27.41 | 40,850 |   |  
            | 2/23/2018 | +0.50 / +0.98% | 52.00 | 52.00 | 51.00 | 51.70 | 51.28 | 27.30 | 49,040 |   |  			
            | 2/22/2018 | -0.60 / -1.16% | 51.60 | 51.60 | 51.00 | 51.20 | 51.14 | 27.04 | 10,520 |   |  
            | 2/21/2018 | +0.80 / +1.57% | 51.00 | 52.80 | 51.00 | 51.80 | 51.25 | 27.35 | 6,810 |   |  			
            | 2/13/2018 | -0.20 / -0.39% | 51.40 | 51.40 | 50.50 | 51.00 | 50.94 | 26.93 | 14,920 |   |  
            | 2/12/2018 | +1.25 / +2.50% | 51.80 | 51.80 | 49.90 | 51.20 | 50.27 | 27.04 | 16,610 |   |  			
            | 2/9/2018 | -0.05 / -0.10% | 50.20 | 50.20 | 46.60 | 49.95 | 49.51 | 26.38 | 15,450 |   |  
            | 2/8/2018 | 0.00 / 0.00% | 50.00 | 50.40 | 49.90 | 50.00 | 50.00 | 26.40 | 20,040 |   |  			
            | 2/7/2018 | 0.00 / 0.00% | 50.00 | 50.50 | 49.90 | 50.00 | 50.06 | 26.40 | 51,080 |   |  
            | 2/6/2018 | -1.00 / -1.96% | 50.20 | 50.20 | 49.00 | 50.00 | 49.39 | 26.40 | 68,090 |   |  			
            | 2/5/2018 | -1.00 / -1.92% | 51.70 | 51.70 | 51.00 | 51.00 | 51.53 | 26.93 | 19,970 |   |  
            | 2/2/2018 | +0.10 / +0.19% | 52.00 | 52.00 | 51.70 | 52.00 | 51.73 | 27.46 | 6,650 |   |  			
            | 2/1/2018 | -0.10 / -0.19% | 52.00 | 52.00 | 51.70 | 51.90 | 51.77 | 27.41 | 25,980 |   |  
            | 1/31/2018 | -0.10 / -0.19% | 52.10 | 52.10 | 51.70 | 52.00 | 51.80 | 27.46 | 16,930 |   |  			
            | 1/30/2018 | +0.10 / +0.19% | 52.00 | 52.30 | 51.70 | 52.10 | 52.01 | 27.51 | 15,460 |   |  
            | 1/29/2018 | 0.00 / 0.00% | 52.00 | 52.40 | 51.60 | 52.00 | 51.89 | 27.46 | 18,000 |   |  			
            | 1/26/2018 | 0.00 / 0.00% | 52.50 | 52.50 | 52.00 | 52.00 | 52.04 | 27.46 | 10,070 |   |  
            | 1/25/2018 | 0.00 / 0.00% | 52.70 | 52.70 | 51.50 | 52.00 | 52.07 | 27.46 | 23,430 |   |  			
            | 1/22/2018 | -1.10 / -2.07% | 53.10 | 53.10 | 52.00 | 52.00 | 52.33 | 27.46 | 28,070 |   |  
            | 1/19/2018 | +0.90 / +1.72% | 52.20 | 53.40 | 52.20 | 53.10 | 52.56 | 28.04 | 7,820 |   |  			
            | 1/18/2018 | -1.10 / -2.06% | 53.30 | 53.30 | 52.10 | 52.20 | 52.93 | 27.56 | 12,280 |   |  
            | 1/17/2018 | -0.10 / -0.19% | 53.50 | 53.50 | 53.20 | 53.30 | 53.43 | 28.15 | 32,100 |   |  			
            | 1/16/2018 | +0.10 / +0.19% | 53.50 | 53.50 | 53.20 | 53.40 | 53.41 | 28.20 | 11,160 |   |  
            | 1/15/2018 | -0.10 / -0.19% | 53.40 | 53.40 | 53.00 | 53.30 | 53.15 | 28.15 | 13,490 |   |  			
            | 1/12/2018 | +0.50 / +0.95% | 52.80 | 53.50 | 52.80 | 53.40 | 53.22 | 28.20 | 28,410 |   |  
            | 1/11/2018 | -0.10 / -0.19% | 52.60 | 52.90 | 52.30 | 52.90 | 52.75 | 27.93 | 12,530 |   |  			
            | 1/10/2018 | 0.00 / 0.00% | 52.50 | 53.00 | 52.00 | 53.00 | 52.41 | 27.99 | 20,930 |   |  
            | 1/9/2018 | 0.00 / 0.00% | 53.50 | 53.50 | 52.00 | 53.00 | 52.38 | 27.99 | 21,630 |   |  			
            | 1/8/2018 | +1.00 / +1.92% | 52.60 | 53.00 | 51.70 | 53.00 | 52.35 | 27.99 | 32,800 |   |  
            | 1/5/2018 | 0.00 / 0.00% | 51.70 | 52.00 | 51.70 | 52.00 | 51.89 | 27.46 | 8,480 |   |  |