YearPToutPBase 100
201294.24%100
201394.78%100.3
201493.38%100.6
201593.8%100.9
201694.71%101.2
2017100%101.5
201897.54%101.8
201998.28%102.1
202094.97%102.4
202194.66%102.7
Evolution : 2 % entre 2012 et 2021 soit 0.27 % de gain par an.