YearPToutPBase 100
201194.79%100
201299.06%100.2
201397.5%100.4
201497.37%100.5
201594.8%100.7
201697.42%100.9
201793.05%101.1
2018100%101.2
201999.24%101.4
202097.55%101.6
Evolution : 1 % entre 2011 et 2020 soit 0.16 % de gain par an.