YearPToutPBase 100
201195.73%100
201298.11%100.2
201397.87%100.4
201498.23%100.6
201595.23%100.8
201699.69%101
2017100%101.2
201899.62%101.4
201999.65%101.6
202096.6%101.8
202198.73%102
Evolution : 2 % entre 2011 et 2021 soit 0.18 % de gain par an.