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                    Closing price on 5/28/2018
                 |  |  
    
        |           
                
                    | Open | 13.10 |  
                    | High | 13.20 |  
                    | Low | 13.05 |  
                    | Volume | 49,090 |  
                    | Split-adjusted Price | 8.53 |  
                
             | 
 |  NAF Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/28/2018 | -0.25 / -1.88% | 13.10 | 13.20 | 13.05 | 13.05 | 13.10 | 8.53 | 49,090 |   |  
            | 5/25/2018 | 0.00 / 0.00% | 13.40 | 13.40 | 13.20 | 13.30 | 13.34 | 8.69 | 46,490 |   |  			
            | 5/24/2018 | -0.05 / -0.37% | 13.50 | 13.50 | 13.25 | 13.30 | 13.33 | 8.69 | 45,760 |   |  
            | 5/23/2018 | -0.05 / -0.37% | 13.70 | 13.90 | 13.35 | 13.35 | 13.61 | 8.72 | 54,450 |   |  			
            | 5/22/2018 | -0.20 / -1.47% | 13.60 | 13.60 | 13.10 | 13.40 | 13.41 | 8.75 | 45,580 |   |  
            | 5/21/2018 | -0.20 / -1.45% | 13.90 | 13.90 | 13.50 | 13.60 | 13.71 | 8.89 | 473,642 |   |  			
            | 5/18/2018 | +0.10 / +0.73% | 13.80 | 13.80 | 13.40 | 13.80 | 13.70 | 9.02 | 53,280 |   |  
            | 5/17/2018 | -0.20 / -1.44% | 13.90 | 14.00 | 13.70 | 13.70 | 13.81 | 8.95 | 50,600 |   |  			
            | 5/16/2018 | -0.20 / -1.42% | 14.00 | 14.10 | 13.65 | 13.90 | 13.91 | 9.08 | 51,970 |   |  
            | 5/15/2018 | +0.10 / +0.71% | 14.00 | 14.30 | 14.00 | 14.10 | 14.19 | 9.21 | 59,960 |   |  			
            | 5/14/2018 | +0.20 / +1.45% | 13.80 | 14.00 | 13.80 | 14.00 | 13.93 | 9.15 | 49,690 |   |  
            | 5/11/2018 | +0.10 / +0.73% | 13.70 | 14.10 | 13.50 | 13.80 | 13.68 | 9.02 | 64,400 |   |  			
            | 5/10/2018 | -0.20 / -1.44% | 14.00 | 14.10 | 13.00 | 13.70 | 13.66 | 8.95 | 48,230 |   |  
            | 5/9/2018 | -0.10 / -0.71% | 13.90 | 14.20 | 13.90 | 13.90 | 14.03 | 9.08 | 53,940 |   |  			
            | 5/8/2018 | 0.00 / 0.00% | 14.00 | 14.30 | 13.80 | 14.00 | 14.08 | 9.15 | 54,760 |   |  
            | 5/7/2018 | +0.20 / +1.45% | 13.80 | 14.00 | 13.70 | 14.00 | 13.87 | 9.15 | 54,000 |   |  			
            | 5/4/2018 | 0.00 / 0.00% | 13.80 | 14.10 | 13.60 | 13.80 | 13.86 | 9.02 | 54,490 |   |  
            | 5/3/2018 | 0.00 / 0.00% | 13.90 | 13.90 | 13.60 | 13.80 | 13.77 | 9.02 | 56,990 |   |  			
            | 5/2/2018 | -0.15 / -1.08% | 13.90 | 14.00 | 13.80 | 13.80 | 13.89 | 9.02 | 53,070 |   |  
            | 4/27/2018 | 0.00 / 0.00% | 13.90 | 14.00 | 13.80 | 13.95 | 13.93 | 9.11 | 43,510 |   |  			
            | 4/26/2018 | -0.15 / -1.06% | 14.00 | 14.05 | 13.90 | 13.95 | 13.98 | 9.11 | 53,780 |   |  
            | 4/24/2018 | +0.10 / +0.71% | 14.00 | 14.10 | 13.60 | 14.10 | 13.89 | 9.21 | 55,380 |   |  			
            | 4/23/2018 | -0.50 / -3.45% | 14.50 | 14.70 | 14.00 | 14.00 | 14.45 | 9.15 | 57,420 |   |  
            | 4/20/2018 | +0.10 / +0.69% | 14.50 | 14.70 | 14.50 | 14.50 | 14.57 | 9.47 | 59,020 |   |  			
            | 4/19/2018 | -0.60 / -4.00% | 14.40 | 14.50 | 14.25 | 14.40 | 14.37 | 9.41 | 57,980 |   |  
            | 4/18/2018 | 0.00 / 0.00% | 15.00 | 15.20 | 15.00 | 15.00 | 15.06 | 9.33 | 47,740 |   |  			
            | 4/17/2018 | 0.00 / 0.00% | 15.10 | 15.20 | 14.90 | 15.00 | 15.07 | 9.33 | 50,970 |   |  
            | 4/16/2018 | -0.10 / -0.66% | 15.10 | 15.20 | 14.90 | 15.00 | 15.03 | 9.33 | 53,710 |   |  			
            | 4/13/2018 | -0.10 / -0.66% | 15.20 | 15.40 | 15.10 | 15.10 | 15.20 | 9.40 | 51,300 |   |  
            | 4/12/2018 | +0.20 / +1.33% | 15.00 | 15.40 | 15.00 | 15.20 | 15.17 | 9.46 | 64,920 |   |  |