the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 78.76 | -0.42 % |
| 2020 | 79.10 | -0.01 % |
| 2019 | 79.10 | -0.13 % |
| 2018 | 79.21 | 0.13 % |
| 2017 | 79.10 | -0.41 % |
| 2016 | 79.43 | 0.67 % |
| 2015 | 78.90 | 0.14 % |
| 2014 | 78.79 | 0.19 % |
| 2013 | 78.64 | -0.51 % |
| 2012 | 79.05 | -0.21 % |
| 2011 | 79.22 | 0.06 % |
| 2010 | 79.17 |