YearPToutPBase 100
201198.29%100
201295.24%100.3
201396.09%100.7
201497.97%101
201598.17%101.4
201698.07%101.7
201799.82%102
201898.08%102.4
201998.86%102.7
2020100%103.1
202199.7%103.4
Evolution : 3 % entre 2011 et 2021 soit 0.30 % de gain par an.