YearPToutPBase 100
201198.04%100
201297.66%100.2
201396.67%100.4
201497.84%100.7
201598.39%100.9
201698.67%101.1
201799.4%101.3
201898.57%101.6
2019100%101.8
202098.83%102
202199.41%102.2
Evolution : 2 % entre 2011 et 2021 soit 0.20 % de gain par an.