YearPToutPBase 100
201191.94%100
201294.59%100.7
201397.13%101.4
201495.32%102.1
201594.84%102.8
201697.38%103.5
201799.1%104.2
2018100%104.9
201998.88%105.6
202098.19%106.3
202199.71%107
Evolution : 7 % entre 2011 et 2021 soit 0.62 % de gain par an.