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            | 
                    Closing price on 2/24/2017
                 |  |  
    
        |           
                
                    | Open | 77.00 |  
                    | High | 78.90 |  
                    | Low | 77.00 |  
                    | Volume | 29,060 |  
                    | Split-adjusted Price | 28.17 |  
                
             | 
 |  NNC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/24/2017 | +1.00 / +1.30% | 77.00 | 78.90 | 77.00 | 78.00 | 78.05 | 28.17 | 29,060 |   |  
            | 2/23/2017 | -2.40 / -3.02% | 78.50 | 78.50 | 77.00 | 77.00 | 77.41 | 27.80 | 46,970 |   |  			
            | 2/22/2017 | -1.60 / -1.98% | 80.50 | 80.50 | 77.00 | 79.40 | 79.34 | 28.67 | 35,090 |   |  
            | 2/21/2017 | +2.70 / +3.45% | 79.50 | 81.60 | 78.40 | 81.00 | 79.92 | 29.25 | 62,510 |   |  			
            | 2/20/2017 | +5.10 / +6.97% | 74.50 | 78.30 | 73.20 | 78.30 | 76.06 | 28.27 | 107,340 |   |  
            | 2/17/2017 | +0.20 / +0.27% | 73.00 | 74.20 | 71.50 | 73.20 | 73.60 | 26.43 | 53,630 |   |  			
            | 2/16/2017 | +1.00 / +1.39% | 73.00 | 73.50 | 72.60 | 73.00 | 72.93 | 26.36 | 63,690 |   |  
            | 2/15/2017 | +2.00 / +2.86% | 70.00 | 72.00 | 70.00 | 72.00 | 70.83 | 26.00 | 64,320 |   |  			
            | 2/14/2017 | -0.40 / -0.57% | 71.00 | 71.00 | 69.80 | 70.00 | 70.02 | 25.28 | 45,390 |   |  
            | 2/13/2017 | -0.60 / -0.85% | 71.00 | 71.00 | 70.00 | 70.40 | 70.35 | 25.42 | 45,670 |   |  			
            | 2/10/2017 | -0.80 / -1.11% | 71.80 | 71.80 | 70.70 | 71.00 | 71.01 | 25.64 | 21,700 |   |  
            | 2/9/2017 | -1.00 / -1.37% | 72.80 | 72.80 | 70.20 | 71.80 | 71.22 | 25.93 | 22,030 |   |  			
            | 2/8/2017 | +2.60 / +3.70% | 70.00 | 72.80 | 69.60 | 72.80 | 71.00 | 26.29 | 27,410 |   |  
            | 2/7/2017 | -0.30 / -0.43% | 70.50 | 71.00 | 69.70 | 70.20 | 70.13 | 25.35 | 38,600 |   |  			
            | 2/6/2017 | -1.00 / -1.40% | 72.00 | 72.00 | 70.40 | 70.50 | 71.03 | 25.46 | 21,780 |   |  
            | 2/3/2017 | -0.30 / -0.42% | 72.00 | 72.50 | 71.50 | 71.50 | 71.92 | 25.82 | 68,950 |   |  			
            | 2/2/2017 | -0.70 / -0.97% | 72.50 | 72.70 | 71.80 | 71.80 | 71.97 | 25.93 | 14,520 |   |  
            | 1/25/2017 | +1.50 / +2.11% | 72.00 | 72.50 | 71.50 | 72.50 | 72.18 | 26.18 | 13,730 |   |  			
            | 1/24/2017 | -1.60 / -2.20% | 72.60 | 72.60 | 71.00 | 71.00 | 71.64 | 25.64 | 31,310 |   |  
            | 1/23/2017 | 0.00 / 0.00% | 72.80 | 73.00 | 72.50 | 72.60 | 72.80 | 26.22 | 12,060 |   |  			
            | 1/20/2017 | +0.10 / +0.14% | 73.90 | 74.00 | 72.00 | 72.60 | 72.53 | 26.22 | 17,730 |   |  
            | 1/19/2017 | -0.50 / -0.68% | 73.80 | 73.80 | 71.50 | 72.50 | 72.70 | 26.18 | 9,010 |   |  			
            | 1/18/2017 | 0.00 / 0.00% | 74.40 | 74.40 | 72.00 | 73.00 | 72.36 | 26.36 | 11,760 |   |  
            | 1/17/2017 | -1.10 / -1.48% | 74.10 | 74.20 | 73.00 | 73.00 | 73.64 | 26.36 | 6,980 |   |  			
            | 1/16/2017 | -0.40 / -0.54% | 74.80 | 75.40 | 74.10 | 74.10 | 74.50 | 26.76 | 7,450 |   |  
            | 1/13/2017 | -0.30 / -0.40% | 74.80 | 74.80 | 73.80 | 74.50 | 74.60 | 26.90 | 2,480 |   |  			
            | 1/12/2017 | 0.00 / 0.00% | 74.60 | 74.90 | 74.00 | 74.80 | 74.29 | 27.01 | 3,580 |   |  
            | 1/11/2017 | 0.00 / 0.00% | 75.30 | 75.30 | 74.60 | 74.80 | 74.89 | 27.01 | 6,810 |   |  			
            | 1/10/2017 | +0.40 / +0.54% | 74.10 | 75.20 | 74.10 | 74.80 | 74.94 | 27.01 | 4,150 |   |  
            | 1/9/2017 | -0.10 / -0.13% | 74.50 | 74.50 | 74.20 | 74.40 | 74.46 | 26.87 | 5,520 |   |  |