the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 41.57 | -1.71 % |
| 2020 | 42.30 | 1.50 % |
| 2019 | 41.68 | -0.56 % |
| 2018 | 41.91 | -0.83 % |
| 2017 | 42.26 | -1.75 % |
| 2016 | 43.01 | 0.84 % |
| 2015 | 42.65 | -0.44 % |
| 2014 | 42.84 | -1.58 % |
| 2013 | 43.53 | -3.39 % |
| 2012 | 45.06 | 1.29 % |
| 2011 | 44.48 | 2.53 % |
| 2010 | 43.38 |