YearPToutPBase 100
201195.57%100
201294.91%100.5
201394.59%101.1
201497.15%101.6
201597.19%102.2
201696.29%102.7
201798.22%103.3
201897.94%103.8
2019100%104.4
202099.73%104.9
202199.38%105.5
Evolution : 5 % entre 2011 et 2021 soit 0.49 % de gain par an.