YearPToutPBase 100
201295.53%100
201395.54%100.2
201498.31%100.4
201599.08%100.5
201698.56%100.7
2017100%100.9
201896.62%101.1
201999.21%101.3
202099.7%101.5
202195.7%101.6
Evolution : 1 % entre 2012 et 2021 soit 0.16 % de gain par an.