YearPToutPBase 100
201194.15%100
201297.3%100.3
201395.14%100.5
201496.51%100.8
201598.15%101.1
201697.97%101.4
2017100%101.6
201897.41%101.9
201996.9%102.2
202097.02%102.4
202198.29%102.7
Evolution : 2 % entre 2011 et 2021 soit 0.24 % de gain par an.