YearPToutPBase 100
201199.21%100
201293.57%100.1
201397.25%100.2
201493.39%100.4
201598.08%100.5
201698.28%100.6
201798.09%100.7
2018100%100.8
201999.85%100.9
202099.9%101.1
202196.39%101.2
202294.73%101.3
Evolution : 1 % entre 2011 et 2022 soit 0.11 % de gain par an.