YearPToutPBase 100
201195.45%100
201296.36%100.4
201397.17%100.9
201495.62%101.3
201596.4%101.8
201698.2%102.2
201797.14%102.7
201898.87%103.1
201998.02%103.6
202099.95%104
2021100%104.5
Evolution : 4 % entre 2011 et 2021 soit 0.40 % de gain par an.