YearPToutPBase 100
201292.37%100
201393.54%100.3
201488.12%100.6
201593.96%100.8
201694.73%101.1
2017100%101.4
201893.02%101.7
201989.36%101.9
202092.82%102.2
202196.67%102.5
Evolution : 2 % entre 2012 et 2021 soit 0.25 % de gain par an.