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            | 
                    Closing price on 2/16/2017
                 |  |  
    
        |           
                
                    | Open | 31.80 |  
                    | High | 32.00 |  
                    | Low | 31.15 |  
                    | Volume | 627,840 |  
                    | Split-adjusted Price | 14.04 |  
                
             | 
 |  NT2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/16/2017 | +0.30 / +0.96% | 31.80 | 32.00 | 31.15 | 31.50 | 31.58 | 14.04 | 627,840 |   |  
            | 2/15/2017 | -0.05 / -0.16% | 31.20 | 31.40 | 30.70 | 31.20 | 31.05 | 13.90 | 201,360 |   |  			
            | 2/14/2017 | -0.35 / -1.11% | 31.85 | 31.85 | 31.00 | 31.25 | 31.33 | 13.92 | 126,910 |   |  
            | 2/13/2017 | +0.35 / +1.12% | 31.35 | 32.00 | 31.30 | 31.60 | 31.73 | 14.08 | 178,370 |   |  			
            | 2/10/2017 | +0.25 / +0.81% | 31.10 | 31.40 | 30.95 | 31.25 | 31.20 | 13.92 | 320,070 |   |  
            | 2/9/2017 | 0.00 / 0.00% | 31.00 | 31.20 | 30.80 | 31.00 | 31.05 | 13.81 | 1,949,532 |   |  			
            | 2/8/2017 | 0.00 / 0.00% | 31.00 | 31.00 | 30.00 | 31.00 | 30.85 | 13.81 | 230,130 |   |  
            | 2/7/2017 | -0.10 / -0.32% | 31.50 | 31.75 | 30.70 | 31.00 | 31.32 | 13.81 | 431,350 |   |  			
            | 2/6/2017 | +1.00 / +3.32% | 30.40 | 31.30 | 30.00 | 31.10 | 30.75 | 13.86 | 600,664 |   |  
            | 2/3/2017 | +0.90 / +3.08% | 29.40 | 30.50 | 29.35 | 30.10 | 30.00 | 13.41 | 449,820 |   |  			
            | 2/2/2017 | +0.20 / +0.69% | 29.05 | 29.20 | 28.90 | 29.20 | 29.09 | 13.01 | 435,750 |   |  
            | 1/25/2017 | -0.10 / -0.34% | 29.20 | 29.20 | 28.85 | 29.00 | 28.95 | 12.92 | 145,930 |   |  			
            | 1/24/2017 | -0.10 / -0.34% | 29.25 | 29.40 | 29.10 | 29.10 | 29.21 | 12.97 | 72,890 |   |  
            | 1/23/2017 | +0.20 / +0.69% | 29.30 | 29.30 | 28.30 | 29.20 | 29.05 | 13.01 | 367,550 |   |  			
            | 1/20/2017 | +0.25 / +0.87% | 28.95 | 29.35 | 28.95 | 29.00 | 29.22 | 12.92 | 261,260 |   |  
            | 1/19/2017 | -0.05 / -0.17% | 28.75 | 28.85 | 28.55 | 28.75 | 28.71 | 12.81 | 160,860 |   |  			
            | 1/18/2017 | -0.10 / -0.35% | 28.80 | 29.00 | 28.60 | 28.80 | 28.80 | 12.83 | 236,620 |   |  
            | 1/17/2017 | -0.10 / -0.34% | 28.70 | 29.00 | 28.70 | 28.90 | 28.90 | 12.88 | 218,570 |   |  			
            | 1/16/2017 | -0.20 / -0.68% | 29.00 | 29.30 | 28.60 | 29.00 | 28.84 | 12.92 | 540,630 |   |  
            | 1/13/2017 | +0.55 / +1.92% | 28.80 | 29.45 | 28.70 | 29.20 | 29.13 | 13.01 | 780,130 |   |  			
            | 1/12/2017 | +0.25 / +0.88% | 28.70 | 28.95 | 28.40 | 28.65 | 28.56 | 12.77 | 806,120 |   |  
            | 1/11/2017 | +0.90 / +3.27% | 27.50 | 28.70 | 27.50 | 28.40 | 28.35 | 12.65 | 701,870 |   |  			
            | 1/10/2017 | 0.00 / 0.00% | 27.60 | 27.60 | 27.45 | 27.50 | 27.50 | 12.25 | 1,002,098 |   |  
            | 1/9/2017 | +0.15 / +0.55% | 27.40 | 27.70 | 27.40 | 27.50 | 27.51 | 12.25 | 402,450 |   |  			
            | 1/6/2017 | 0.00 / 0.00% | 27.30 | 27.45 | 27.30 | 27.35 | 27.35 | 12.19 | 157,620 |   |  
            | 1/5/2017 | -0.15 / -0.55% | 27.40 | 27.45 | 27.30 | 27.35 | 27.38 | 12.19 | 163,080 |   |  			
            | 1/4/2017 | +0.20 / +0.73% | 27.30 | 27.60 | 27.20 | 27.50 | 27.42 | 12.25 | 187,080 |   |  
            | 1/3/2017 | 0.00 / 0.00% | 27.30 | 27.40 | 27.15 | 27.30 | 27.27 | 12.16 | 222,470 |   |  			
            | 12/30/2016 | +0.05 / +0.18% | 27.40 | 27.40 | 27.10 | 27.30 | 27.29 | 12.16 | 343,090 |   |  
            | 12/29/2016 | -0.15 / -0.55% | 27.20 | 27.40 | 27.20 | 27.25 | 27.24 | 12.14 | 117,810 |   |  |