YearPToutPBase 100
201196.55%100
201297.51%100.3
201397.16%100.5
201498.06%100.8
201598.86%101
201698.8%101.3
2017100%101.5
201898.66%101.8
201999.3%102
202099.19%102.3
202198.89%102.5
Evolution : 2 % entre 2011 et 2021 soit 0.22 % de gain par an.