YearPToutPBase 100
201096.86%100
201195.4%100.2
201296.95%100.4
201394.89%100.7
201496.87%100.9
201598.11%101.1
201697.74%101.3
2017100%101.6
201898.88%101.8
201998.08%102
202099.53%102.2
202195.67%102.4
Evolution : 2 % entre 2010 et 2021 soit 0.20 % de gain par an.