Annual data series are interpolated from 5-year period data. Therefore they may not reflect real events as much as observed data.
| Date | Valeur | Modifier , % |
|---|---|---|
| 2023 | 50,2 | -0,04 % |
| 2022 | 50,2 | -0,04 % |
| 2021 | 50,2 | -0,04 % |
| 2020 | 50,2 | -0,04 % |
| 2019 | 50,3 | -0,05 % |
| 2018 | 50,3 | -0,05 % |
| 2017 | 50,3 | -0,05 % |
| 2016 | 50,3 | -0,05 % |
| 2015 | 50,4 | -0,05 % |
| 2014 | 50,4 | -0,06 % |
| 2013 | 50,4 | -0,06 % |
| 2012 | 50,5 |