YearPToutPBase 100
201189.03%100
201291.34%100.7
201393.2%101.4
201493.3%102.1
201595.83%102.8
201693.8%103.5
201747.13%104.2
201899.75%104.9
2019100%105.6
202099.74%106.3
202198.95%107
Evolution : 7 % entre 2011 et 2021 soit 0.62 % de gain par an.