YearPToutPBase 100
201196.09%100
201294.5%100.1
201398.02%100.3
201498.14%100.4
201599.65%100.6
201699.19%100.7
201796.63%100.9
201896.91%101
201999.39%101.1
2020100%101.3
202195.9%101.4
202297.69%101.6
Evolution : 1 % entre 2011 et 2022 soit 0.13 % de gain par an.