YearPToutPBase 100
201197.77%100
201297.99%100.2
201398.35%100.3
201496.2%100.5
201595.3%100.6
201695.3%100.8
201799.91%101
201896.58%101.1
201998.41%101.3
2020100%101.4
Evolution : 1 % entre 2011 et 2020 soit 0.14 % de gain par an.