YearPToutPBase 100
200890%100
200987.4%101.5
201082.42%103
201182.16%104.5
201281.9%105.9
201383.46%107.4
201495.75%108.9
201598.96%110.4
201693.68%111.9
2017100%113.4
201894.58%114.9
201996.85%116.3
202097.66%117.8
202198.56%119.3
Evolution : 19 % entre 2008 et 2021 soit 1.27 % de gain par an.