YearPToutPBase 100
201195.97%100
201296.35%100.2
201394.99%100.4
201496.59%100.7
201597.21%100.9
201696.24%101.1
201797.37%101.3
201898.42%101.6
2019100%101.8
202096.84%102
202196.5%102.2
Evolution : 2 % entre 2011 et 2021 soit 0.20 % de gain par an.