YearPToutPBase 100
201196.25%100
201296.57%100.2
201396.92%100.4
201497.16%100.6
201598.38%100.8
201698.01%100.9
201798.05%101.1
201895.46%101.3
201995.4%101.5
202098.95%101.7
2021100%101.9
Evolution : 1 % entre 2011 et 2021 soit 0.17 % de gain par an.