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            | 
                    Closing price on 3/23/2017
                 |  |  
    
        |           
                
                    | Open | 31.20 |  
                    | High | 32.60 |  
                    | Low | 31.20 |  
                    | Volume | 916,420 |  
                    | Split-adjusted Price | 14.39 |  
                
             | 
 |  NT2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/23/2017 | +1.00 / +3.19% | 31.20 | 32.60 | 31.20 | 32.30 | 32.16 | 14.39 | 916,420 |   |  
            | 3/22/2017 | +0.55 / +1.79% | 30.50 | 31.60 | 30.50 | 31.30 | 31.35 | 13.95 | 499,630 |   |  			
            | 3/21/2017 | -0.20 / -0.65% | 30.95 | 31.30 | 30.75 | 30.75 | 30.98 | 13.70 | 334,870 |   |  
            | 3/20/2017 | +0.65 / +2.15% | 30.50 | 30.95 | 30.35 | 30.95 | 30.73 | 13.79 | 273,560 |   |  			
            | 3/17/2017 | 0.00 / 0.00% | 30.45 | 30.50 | 30.30 | 30.30 | 30.31 | 13.50 | 1,135,410 |   |  
            | 3/16/2017 | +0.30 / +1.00% | 30.00 | 30.50 | 30.00 | 30.30 | 30.34 | 13.50 | 231,620 |   |  			
            | 3/15/2017 | +0.10 / +0.33% | 30.00 | 30.00 | 29.85 | 30.00 | 29.92 | 13.37 | 685,990 |   |  
            | 3/14/2017 | -0.20 / -0.66% | 30.10 | 30.10 | 29.80 | 29.90 | 29.88 | 13.32 | 153,220 |   |  			
            | 3/13/2017 | +0.10 / +0.33% | 29.90 | 30.20 | 29.75 | 30.10 | 29.91 | 13.41 | 191,020 |   |  
            | 3/10/2017 | +0.10 / +0.33% | 29.85 | 30.20 | 29.70 | 30.00 | 29.94 | 13.37 | 161,370 |   |  			
            | 3/9/2017 | -0.05 / -0.17% | 29.90 | 30.00 | 29.75 | 29.90 | 29.89 | 13.32 | 68,140 |   |  
            | 3/8/2017 | +0.30 / +1.01% | 29.65 | 30.10 | 29.55 | 29.95 | 29.80 | 13.35 | 270,070 |   |  			
            | 3/7/2017 | -0.35 / -1.17% | 30.00 | 30.10 | 29.50 | 29.65 | 29.66 | 13.21 | 459,320 |   |  
            | 3/6/2017 | +0.35 / +1.18% | 29.65 | 30.10 | 29.65 | 30.00 | 29.95 | 13.37 | 238,920 |   |  			
            | 3/3/2017 | -0.05 / -0.17% | 29.95 | 29.95 | 29.55 | 29.65 | 29.63 | 13.21 | 185,240 |   |  
            | 3/2/2017 | +0.05 / +0.17% | 30.20 | 30.20 | 29.40 | 29.70 | 29.67 | 13.23 | 273,880 |   |  			
            | 3/1/2017 | +0.05 / +0.17% | 29.60 | 30.20 | 29.60 | 29.65 | 29.85 | 13.21 | 265,270 |   |  
            | 2/28/2017 | -1.65 / -5.28% | 31.40 | 31.40 | 29.60 | 29.60 | 30.39 | 13.19 | 548,890 |   |  			
            | 2/27/2017 | -0.50 / -1.57% | 31.80 | 31.80 | 31.25 | 31.25 | 31.47 | 13.92 | 251,080 |   |  
            | 2/24/2017 | -0.05 / -0.16% | 32.40 | 32.40 | 31.70 | 31.75 | 32.06 | 14.15 | 251,720 |   |  			
            | 2/23/2017 | +0.65 / +2.09% | 31.40 | 32.50 | 31.40 | 31.80 | 31.97 | 14.17 | 740,080 |   |  
            | 2/22/2017 | -0.65 / -2.04% | 31.80 | 31.80 | 31.00 | 31.15 | 31.39 | 13.88 | 244,280 |   |  			
            | 2/21/2017 | -0.10 / -0.31% | 31.90 | 32.00 | 31.70 | 31.80 | 31.77 | 14.17 | 81,850 |   |  
            | 2/20/2017 | +0.20 / +0.63% | 31.70 | 31.95 | 31.30 | 31.90 | 31.72 | 14.21 | 157,480 |   |  			
            | 2/17/2017 | +0.20 / +0.63% | 31.50 | 31.80 | 31.30 | 31.70 | 31.58 | 14.12 | 275,490 |   |  
            | 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 |   |  |