YearPToutPBase 100
201192.14%100
201291.87%100.2
201393.07%100.5
201494.12%100.7
201592.8%100.9
201692.56%101.2
201793.72%101.4
201892.35%101.6
201991.61%101.9
202089.7%102.1
2021100%102.3
Evolution : 2 % entre 2011 et 2021 soit 0.21 % de gain par an.