YearPToutPBase 100
201194.91%100
201291.57%100.6
201395.73%101.1
201493.57%101.7
201598.11%102.2
201691.38%102.8
201796.99%103.3
201896.86%103.9
201997.01%104.5
2020100%105
202197.76%105.6
Evolution : 5 % entre 2011 et 2021 soit 0.50 % de gain par an.