YearPToutPBase 100
201194.19%100
201293.26%100.6
201395.17%101.3
201495.42%101.9
201597.22%102.6
201698.97%103.2
201798.03%103.9
201899.52%104.5
2019100%105.2
202098.74%105.8
202198.52%106.5
Evolution : 6 % entre 2011 et 2021 soit 0.57 % de gain par an.