YearPToutPBase 100
201191.62%100
201289.47%100.4
201393.69%100.7
201493.55%101.1
201590.2%101.5
2016100%101.8
201795.5%102.2
201894.92%102.6
201993.36%103
202096.4%103.3
202192.14%103.7
Evolution : 3 % entre 2011 et 2021 soit 0.33 % de gain par an.