YearPToutPBase 100
201197.38%100
201296.02%100.3
201394.79%100.5
201495.46%100.8
201595.13%101
201698.42%101.3
201796.89%101.5
2018100%101.8
201998.13%102
202098.64%102.3
202196.46%102.5
Evolution : 2 % entre 2011 et 2021 soit 0.22 % de gain par an.