YearPToutPBase 100
201195.17%100
201297%100.2
201395.78%100.4
201495.69%100.6
201596.18%100.8
201694.65%101
201796.99%101.2
201895.82%101.4
2019100%101.6
202098.78%101.8
202195.32%102.1
Evolution : 2 % entre 2011 et 2021 soit 0.19 % de gain par an.