YearPToutPBase 100
201191.98%100
201289.13%100.6
201398.58%101.3
201498.17%101.9
201597.13%102.6
201699.62%103.2
201795.94%103.8
201898.24%104.5
201995.34%105.1
202098.32%105.8
2021100%106.4
Evolution : 6 % entre 2011 et 2021 soit 0.57 % de gain par an.