YearPToutPBase 100
201192.62%100
201291.36%100.3
201397.69%100.5
201493.61%100.8
2015100%101
201696.82%101.3
201798.46%101.6
201896.58%101.8
201997.03%102.1
202094.4%102.4
202195.14%102.6
Evolution : 2 % entre 2011 et 2021 soit 0.23 % de gain par an.