YearPToutPBase 100
201195.21%100
201294.98%100.5
201393.59%101
201495.14%101.6
201598.23%102.1
2016100%102.6
201799.88%103.1
201899.7%103.7
201997.68%104.2
202097.93%104.7
202199.13%105.2
Evolution : 5 % entre 2011 et 2021 soit 0.46 % de gain par an.