YearPToutPBase 100
201197.7%100
201297.82%100.4
201394.19%100.7
201496.65%101.1
201594.57%101.5
201693.45%101.8
201792.74%102.2
2018100%102.5
201999.79%102.9
202099.37%103.3
202199.73%103.6
Evolution : 3 % entre 2011 et 2021 soit 0.32 % de gain par an.