YearPToutPBase 100
201093.35%100
201191.89%100.6
201291.74%101.3
201390.41%101.9
201494.38%102.5
201594.16%103.2
201687.93%103.8
201792.74%104.4
201892.54%105.1
201999.25%105.7
2020100%106.4
Evolution : 6 % entre 2010 et 2020 soit 0.57 % de gain par an.