YearPToutPBase 100
201190.29%100
201293.47%100.9
201393.98%101.8
201489.59%102.8
201595.03%103.7
201696.95%104.6
201794.59%105.5
201895.12%106.4
201997.27%107.3
2020100%108.3
202199.31%109.2
Evolution : 9 % entre 2011 et 2021 soit 0.80 % de gain par an.