YearPToutPBase 100
201195.85%100
201296.3%100.5
201395.34%101
201495.81%101.4
201597.04%101.9
201695.54%102.4
201799.12%102.9
201896.77%103.3
201999.01%103.8
202099.8%104.3
2021100%104.8
Evolution : 4 % entre 2011 et 2021 soit 0.43 % de gain par an.