 
 
|      Year  
           |   Beginning Price  
           |   Ending Price  
           |   Gain or Loss 
           |   Percent Gain or Loss  
           | 
| 2009 
           | 21.36 
           | 26.54 
           | 5.18 
           | 24.25% 
           | 
| 2010 
           | 26.54 
           | 28.74 
           | 2.20 
           | 8.29% 
           | 
| 2011 
           | 28.74 
           | 28.08 
           | -0.66 
           | -2.30% 
           | 
| 2012 
           | 28.08 
           | 28.90 
           | 0.82 
           | 2.92% 
           | 
| 2013 
           | 28.90 
           | 19.29 
           | -9.61 
           | -33.25% 
           | 
| 2014 
           | 19.29 
           | 21.83 
           | 2.54 
           | 13.17% 
           | 
| 2015 
           | 21.83 
           | 17.34 
           | -4.49 
           | -20.57% 
           | 
| 2016 
           | 17.34 
           | 18.13 
           | 0.79 
           | 4.56% 
           | 
| 2017 
           | 18.13 
           | 20.19 
           | 2.06 
           | 11.36% 
           | 
| 2018 
           | 20.19 
           | 17.54 
           | -2.65 
           | -13.13% 
           | 
| 2019 
           | 17.54 
           | 17.68 
           | 0.14 
           | 0.80% 
           | 
| 2020 
           | 17.68 
           | 15.60 
           | -2.08 
           | -11.76% 
           | 
| 2021 
           | 15.60 
           | 15.04 
           | -0.56 
           | -3.59% 
           | 
| 2022 
           | 15.04 
           | 10.35 
           | -4.69 
           | -31.18% 
           | 
| 2023 
           | 10.35 
           | 9.81 
           | -0.54 
           | -5.22% 
           | 
| 2024 
           | 9.81 
           | 9.21 
           | -0.60 
           | -6.12% 
           |