YearPToutPBase 100
201194.55%100
201295.93%100.2
201396.1%100.3
201497.74%100.5
201595.27%100.7
201698.27%100.8
201776.23%101
201897.03%101.1
201997.94%101.3
202099.41%101.5
2021100%101.6
202294.56%101.8
Evolution : 1 % entre 2011 et 2022 soit 0.15 % de gain par an.