YearPToutPBase 100
201194.96%100
201288.33%100.4
201383.18%100.7
201495.66%101.1
201598.03%101.4
201699.17%101.8
2017100%102.2
201896.99%102.5
201997.02%102.9
202095.53%103.3
202187.35%103.6
Evolution : 3 % entre 2011 et 2021 soit 0.32 % de gain par an.