YearPToutPBase 100
201196.14%100
201295.95%100.1
201398.7%100.2
201497.65%100.3
201599.65%100.5
201694.8%100.6
201793.98%100.7
2018100%100.8
201995.68%100.9
202097.59%101
202199.26%101.1
Evolution : 1 % entre 2011 et 2021 soit 0.10 % de gain par an.