the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 55.68 | -0.31 % |
| 2020 | 55.85 | 0.03 % |
| 2019 | 55.83 | -1.24 % |
| 2018 | 56.54 | -2.32 % |
| 2017 | 57.88 | -0.79 % |
| 2016 | 58.34 | -2.78 % |
| 2015 | 60.01 | 2.26 % |
| 2014 | 58.68 | 1.42 % |
| 2013 | 57.86 | 0.87 % |
| 2012 | 57.36 | 0.43 % |
| 2011 | 57.12 | 1.26 % |
| 2010 | 56.41 |