YearPToutPBase 100
201195.27%100
201296.49%100.2
201398.45%100.3
201498.14%100.5
201599.46%100.7
2016100%100.8
201799.79%101
201897.4%101.2
201999.26%101.3
202099.96%101.5
202195.8%101.7
Evolution : 1 % entre 2011 et 2021 soit 0.15 % de gain par an.