YearPToutPBase 100
200821.02%100
201019%100.1
201119.2%100.2
201214.68%100.2
201326.8%100.3
201494.78%100.3
201595.9%100.4
201695.94%100.4
201791.94%100.5
2018100%100.5
201999.2%100.6
202097.18%100.6
202192.12%100.7
Evolution : 0 % entre 2008 et 2021 soit 0.05 % de gain par an.