the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 42.93 | 1.07 % |
| 2020 | 42.47 | 0.08 % |
| 2019 | 42.44 | 0.63 % |
| 2018 | 42.17 | -0.62 % |
| 2017 | 42.43 | 0.51 % |
| 2016 | 42.22 | -3.26 % |
| 2015 | 43.64 | 3.64 % |
| 2014 | 42.11 | -0.47 % |
| 2013 | 42.31 | 1.75 % |
| 2012 | 41.58 | 0.79 % |
| 2011 | 41.25 | 0.29 % |
| 2010 | 41.13 |