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                    Closing price on 7/31/2017
                 |  |  
    
        |           
                
                    | Open | 58.90 |  
                    | High | 58.90 |  
                    | Low | 58.00 |  
                    | Volume | 17,830 |  
                    | Split-adjusted Price | 29.45 |  
                
             | 
 |  NNC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/31/2017 | 0.00 / 0.00% | 58.90 | 58.90 | 58.00 | 58.80 | 58.48 | 29.45 | 17,830 |   |  
            | 7/28/2017 | +0.40 / +0.68% | 59.00 | 59.00 | 58.40 | 58.80 | 58.55 | 29.45 | 3,450 |   |  			
            | 7/27/2017 | +1.00 / +1.74% | 59.50 | 59.50 | 57.50 | 58.40 | 58.17 | 29.25 | 10,400 |   |  
            | 7/26/2017 | +0.70 / +1.23% | 57.20 | 57.40 | 56.80 | 57.40 | 56.89 | 28.75 | 27,510 |   |  			
            | 7/25/2017 | -0.80 / -1.39% | 57.50 | 58.90 | 56.60 | 56.70 | 57.11 | 28.40 | 20,820 |   |  
            | 7/24/2017 | -0.80 / -1.37% | 58.80 | 58.80 | 57.50 | 57.50 | 58.10 | 28.80 | 8,090 |   |  			
            | 7/21/2017 | 0.00 / 0.00% | 58.40 | 58.50 | 58.00 | 58.30 | 58.29 | 29.20 | 6,330 |   |  
            | 7/20/2017 | -0.20 / -0.34% | 58.50 | 58.50 | 57.50 | 58.30 | 57.94 | 29.20 | 25,890 |   |  			
            | 7/19/2017 | -1.20 / -2.01% | 58.60 | 58.70 | 58.30 | 58.50 | 58.40 | 29.30 | 8,510 |   |  
            | 7/18/2017 | +0.20 / +0.34% | 59.00 | 60.00 | 58.30 | 59.70 | 59.07 | 29.90 | 14,170 |   |  			
            | 7/17/2017 | -0.50 / -0.83% | 59.00 | 59.80 | 58.20 | 59.50 | 58.84 | 29.80 | 11,590 |   |  
            | 7/14/2017 | 0.00 / 0.00% | 59.90 | 60.00 | 58.90 | 60.00 | 59.85 | 30.05 | 11,830 |   |  			
            | 7/13/2017 | -0.40 / -0.66% | 60.40 | 60.50 | 59.00 | 60.00 | 59.57 | 30.05 | 11,500 |   |  
            | 7/12/2017 | +0.40 / +0.67% | 60.50 | 60.50 | 59.60 | 60.40 | 60.08 | 30.25 | 19,590 |   |  			
            | 7/11/2017 | 0.00 / 0.00% | 59.70 | 60.00 | 58.30 | 60.00 | 59.11 | 30.05 | 18,220 |   |  
            | 7/10/2017 | -0.20 / -0.33% | 60.00 | 60.00 | 58.00 | 60.00 | 58.93 | 30.05 | 37,740 |   |  			
            | 7/7/2017 | -2.40 / -3.83% | 62.00 | 62.80 | 60.20 | 60.20 | 61.01 | 30.15 | 29,960 |   |  
            | 7/6/2017 | -20.50 / -24.67% | 66.60 | 66.60 | 62.50 | 62.60 | 63.09 | 31.35 | 26,470 |   |  			
            | 7/5/2017 | -0.30 / -0.36% | 83.40 | 83.40 | 82.00 | 83.10 | 82.88 | 31.21 | 75,050 |   |  
            | 7/4/2017 | -0.20 / -0.24% | 83.90 | 83.90 | 82.90 | 83.40 | 83.41 | 31.33 | 69,630 |   |  			
            | 7/3/2017 | 0.00 / 0.00% | 83.90 | 84.10 | 83.60 | 83.60 | 83.85 | 31.40 | 48,680 |   |  
            | 6/30/2017 | -0.40 / -0.48% | 84.00 | 84.20 | 83.50 | 83.60 | 83.75 | 31.40 | 75,520 |   |  			
            | 6/29/2017 | 0.00 / 0.00% | 84.00 | 84.10 | 83.70 | 84.00 | 83.91 | 31.55 | 28,100 |   |  
            | 6/28/2017 | -0.20 / -0.24% | 84.20 | 84.20 | 83.60 | 84.00 | 83.96 | 31.55 | 20,140 |   |  			
            | 6/27/2017 | 0.00 / 0.00% | 84.20 | 84.20 | 83.50 | 84.20 | 83.97 | 31.63 | 34,560 |   |  
            | 6/26/2017 | +0.60 / +0.72% | 83.50 | 84.40 | 83.10 | 84.20 | 84.00 | 31.63 | 57,260 |   |  			
            | 6/23/2017 | +0.60 / +0.72% | 84.90 | 84.90 | 83.60 | 83.60 | 84.21 | 31.40 | 96,870 |   |  
            | 6/22/2017 | +0.50 / +0.61% | 81.30 | 83.30 | 81.30 | 83.00 | 83.00 | 31.18 | 28,700 |   |  			
            | 6/21/2017 | +0.70 / +0.86% | 81.80 | 82.60 | 80.50 | 82.50 | 82.09 | 30.99 | 33,550 |   |  
            | 6/20/2017 | +1.80 / +2.25% | 80.50 | 82.40 | 80.00 | 81.80 | 81.42 | 30.73 | 55,340 |   |  |