YearPToutPBase 100
201187.4%100
201291.09%100.3
201391%100.6
201488.62%101
201590.2%101.3
2016100%101.6
201785.85%101.9
201893.64%102.2
201994.18%102.5
202090.99%102.9
202190.7%103.2
Evolution : 3 % entre 2011 et 2021 soit 0.29 % de gain par an.