YearPToutPBase 100
201196.89%100
201299.73%100.2
201395.16%100.5
201497.58%100.7
201595.99%100.9
201697.49%101.1
201799.87%101.4
201899.47%101.6
201998.96%101.8
202097.07%102
2021100%102.3
Evolution : 2 % entre 2011 et 2021 soit 0.21 % de gain par an.