the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 75.44 | -0.41 % |
| 2020 | 75.75 | 1.24 % |
| 2019 | 74.83 | 0.61 % |
| 2018 | 74.37 | 0.03 % |
| 2017 | 74.35 | 0.85 % |
| 2016 | 73.72 | 0.47 % |
| 2015 | 73.37 | 0.56 % |
| 2014 | 72.97 | -0.06 % |
| 2013 | 73.01 | 0.02 % |
| 2012 | 73.00 | 0.39 % |
| 2011 | 72.71 | -0.04 % |
| 2010 | 72.74 |