YearPToutPBase 100
201192.47%100
201294.37%100.6
201393.28%101.2
201494.08%101.8
201598.24%102.4
2016100%103
201796.94%103.7
201896.98%104.3
201997.7%104.9
202097.21%105.5
202199.18%106.1
Evolution : 6 % entre 2011 et 2021 soit 0.54 % de gain par an.