YearPToutPBase 100
201190.57%100
201293.35%100.3
201397.72%100.6
201493.91%100.9
201594.89%101.2
201698.89%101.5
2017100%101.8
201898.39%102.1
201996.28%102.4
202094.73%102.7
202193.63%102.9
Evolution : 2 % entre 2011 et 2021 soit 0.26 % de gain par an.