YearPToutPBase 100
201194.13%100
201296.07%100.6
201396.32%101.2
201495.35%101.8
201596.32%102.4
201697.96%103
201798.6%103.6
201899.12%104.2
201999%104.8
202099.97%105.4
2021100%106
Evolution : 6 % entre 2011 et 2021 soit 0.53 % de gain par an.