YearPToutPBase 100
201195.15%100
201293.76%100.2
201396.66%100.3
201497.49%100.5
201599.69%100.6
201695.83%100.8
201798.74%100.9
201894.29%101.1
201997.81%101.3
202092.83%101.4
2021100%101.6
Evolution : 1 % entre 2011 et 2021 soit 0.14 % de gain par an.