YearPToutPBase 100
201196.67%100
201296.88%100.3
201395.76%100.5
201497.65%100.8
201597.52%101
201697.65%101.3
201799.26%101.5
2018100%101.8
201999.15%102
202098.24%102.3
202197.59%102.5
Evolution : 2 % entre 2011 et 2021 soit 0.22 % de gain par an.