the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 61.31 | 0.08 % |
| 2020 | 61.26 | 1.02 % |
| 2019 | 60.64 | -0.98 % |
| 2018 | 61.24 | 0.02 % |
| 2017 | 61.23 | 1.41 % |
| 2016 | 60.37 | 0.10 % |
| 2015 | 60.31 | 0.56 % |
| 2014 | 59.97 | 0.45 % |
| 2013 | 59.70 | -2.50 % |
| 2012 | 61.23 | -1.65 % |
| 2011 | 62.26 | 0.39 % |
| 2010 | 62.02 |