YearPToutPBase 100
201193.02%100
201292.18%100.8
201391.2%101.7
201489.48%102.5
201590.12%103.4
201690.04%104.2
201796.19%105
2018100%105.9
201995.57%106.7
202095.81%107.6
202198.7%108.4
Evolution : 8 % entre 2011 et 2021 soit 0.74 % de gain par an.