the highest = the best
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 54.90 | -0.80 % |
| 2020 | 55.35 | 1.09 % |
| 2019 | 54.75 | -0.03 % |
| 2018 | 54.76 | 1.09 % |
| 2017 | 54.17 | -1.35 % |
| 2016 | 54.91 | -1.00 % |
| 2015 | 55.47 | 0.03 % |
| 2014 | 55.46 | 0.20 % |
| 2013 | 55.34 | 1.44 % |
| 2012 | 54.56 | -0.64 % |
| 2011 | 54.91 | -0.18 % |
| 2010 | 55.01 |