YearPToutPBase 100
201195.06%100
201296.36%100.2
201397.4%100.4
201498.02%100.6
201599.58%100.9
201699.37%101.1
2017100%101.3
201899.89%101.5
201999.53%101.7
202098.29%101.9
202195.96%102.1
Evolution : 2 % entre 2011 et 2021 soit 0.19 % de gain par an.