YearPToutPBase 100
201196.22%100
201293.68%100.8
201391.15%101.5
201488.2%102.3
201585.88%103.1
201695.74%103.8
201799.65%104.6
2018100%105.4
201997.04%106.2
202096.64%106.9
Evolution : 6 % entre 2011 et 2020 soit 0.67 % de gain par an.