YearPToutPBase 100
201191.05%100
201298.23%100.3
201398%100.7
201498.72%101
201599.77%101.4
201697.87%101.7
201798.12%102
2018100%102.4
201996.93%102.7
202097.37%103.1
Evolution : 3 % entre 2011 et 2020 soit 0.31 % de gain par an.