YearPToutPBase 100
201096.53%100
201197.81%100.2
201297.73%100.4
201397.72%100.6
201495.17%100.7
201599.81%100.9
201698.49%101.1
2017100%101.3
201898.87%101.5
201999.01%101.7
202099.68%101.9
202197.16%102.1
Evolution : 2 % entre 2010 et 2021 soit 0.17 % de gain par an.