YearPToutPBase 100
201195.53%100
201297.08%100.2
201395.83%100.4
201497.71%100.7
201597.09%100.9
201697.03%101.1
201796.48%101.3
201897.39%101.5
201997.02%101.8
2020100%102
202197.36%102.2
Evolution : 2 % entre 2011 et 2021 soit 0.20 % de gain par an.