YearPToutPBase 100
201396.8%100
201496.42%100.2
2015100%100.4
201698.36%100.6
201798.76%100.8
201899.94%101
201999.55%101.2
202098.54%101.4
202197.95%101.6
Evolution : 1 % entre 2013 et 2021 soit 0.18 % de gain par an.