YearPToutPBase 100
201191.28%100
201285.21%100.3
201390.2%100.5
201492.02%100.8
201590.97%101.1
201693.67%101.3
201791.42%101.6
2018100%101.9
201982.83%102.2
202091.32%102.4
202192.86%102.7
Evolution : 2 % entre 2011 et 2021 soit 0.24 % de gain par an.