YearPToutPBase 100
201197.04%100
201299.92%100.1
201396.72%100.3
201493.56%100.4
201598.15%100.5
201697.8%100.7
2017100%100.8
201899.68%101
201996.93%101.1
202098.06%101.2
Evolution : 1 % entre 2011 et 2020 soit 0.12 % de gain par an.