YearPToutPBase 100
201097.41%100
201196.22%100.2
201297.96%100.3
201397.77%100.5
201497.92%100.7
201598.43%100.8
201698.4%101
201795.42%101.2
201897.47%101.3
201997.22%101.5
2020100%101.7
202199.86%101.9
Evolution : 1 % entre 2010 et 2021 soit 0.16 % de gain par an.