YearPToutPBase 100
201296.5%100
201395.77%100.3
201496.59%100.6
201598.14%100.9
201699.18%101.2
201798.05%101.6
201899.74%101.9
201997.54%102.2
202097.16%102.5
2021100%102.8
Evolution : 2 % entre 2012 et 2021 soit 0.28 % de gain par an.