YearPToutPBase 100
201194.26%100
201296.21%100.4
201395.47%100.8
201491.79%101.1
201595.68%101.5
201697.5%101.9
201797.38%102.3
201896.17%102.7
201995.97%103.1
2020100%103.4
202196.78%103.8
Evolution : 3 % entre 2011 et 2021 soit 0.34 % de gain par an.