 
 
|      Year  
           |   Beginning Price  
           |   Ending Price  
           |   Gain or Loss 
           |   Percent Gain or Loss  
           | 
| 2010 
           | 14.02 
           | 15.54 
           | 1.52 
           | 10.84% 
           | 
| 2011 
           | 15.54 
           | 22.07 
           | 6.53 
           | 42.02% 
           | 
| 2012 
           | 22.07 
           | 28.77 
           | 6.70 
           | 30.36% 
           | 
| 2013 
           | 28.77 
           | 45.55 
           | 16.78 
           | 58.32% 
           | 
| 2014 
           | 45.55 
           | 57.53 
           | 11.98 
           | 26.30% 
           | 
| 2015 
           | 57.53 
           | 43.89 
           | -13.64 
           | -23.71% 
           | 
| 2016 
           | 43.89 
           | 43.45 
           | -0.44 
           | -1.00% 
           | 
| 2017 
           | 43.45 
           | 43.50* 
           | 0.05 
           | 0.12% 
           |