YearPToutPBase 100
201196.94%100
201296.71%100.2
201396.76%100.5
201497.6%100.7
201596.93%100.9
201699.15%101.2
201788.29%101.4
201899.5%101.6
201998.42%101.9
2020100%102.1
202199.23%102.3
Evolution : 2 % entre 2011 et 2021 soit 0.21 % de gain par an.