YearPToutPBase 100
201196.27%100
201297.35%100.3
201398%100.6
201495.56%100.9
201599.05%101.2
201698.95%101.4
201798.91%101.7
201897.11%102
201998.75%102.3
202099.06%102.6
2021100%102.9
Evolution : 2 % entre 2011 et 2021 soit 0.26 % de gain par an.