YearPToutPBase 100
201093.94%100
201187.97%100.2
201295.65%100.4
2013100%100.6
201495.32%100.8
201595.24%101
201692.36%101.2
201792.77%101.4
201897.96%101.6
201996.79%101.8
202093.09%102
Evolution : 2 % entre 2010 et 2020 soit 0.18 % de gain par an.