YearPToutPBase 100
201195.17%100
201295.71%100.3
201396.7%100.5
201494.54%100.8
201595.73%101.1
201695.08%101.4
201798.73%101.6
201898.56%101.9
201997.94%102.2
2020100%102.4
202194.48%102.7
Evolution : 2 % entre 2011 et 2021 soit 0.24 % de gain par an.