YearPToutPBase 100
201196.92%100
201296.83%100.2
201393.66%100.4
201495.68%100.6
201594.16%100.8
201695.01%101
201791.93%101.2
201890.55%101.4
201994.43%101.6
202095.72%101.8
2021100%102
202299.65%102.2
Evolution : 2 % entre 2011 et 2022 soit 0.18 % de gain par an.