YearPToutPBase 100
201196.58%100
201296.04%100.3
201398.18%100.7
201488.24%101
201588.07%101.3
201689.9%101.6
201795.05%102
201897.21%102.3
201998.56%102.6
2020100%103
202194.93%103.3
Evolution : 3 % entre 2011 et 2021 soit 0.30 % de gain par an.