YearPToutPBase 100
201195.88%100
201295.4%100.1
201395.25%100.3
201497%100.4
201596.5%100.6
201697.67%100.7
201797.07%100.8
201895.63%101
201994.81%101.1
202094.81%101.3
2021100%101.4
Evolution : 1 % entre 2011 et 2021 soit 0.13 % de gain par an.