YearPToutPBase 100
201190.33%100
201290.41%101.1
201390.76%102.1
201494%103.2
201595.57%104.3
201695.14%105.3
201798.44%106.4
201896.16%107.5
2019100%108.6
202097.04%109.6
202199.31%110.7
Evolution : 10 % entre 2011 et 2021 soit 0.93 % de gain par an.