YearPToutPBase 100
201196.58%100
201297.05%100.2
201396.8%100.4
201497.44%100.6
2015100%100.8
201698.69%101.1
201798.84%101.3
201898.18%101.5
201998.02%101.7
202098.07%101.9
202199.49%102.1
Evolution : 2 % entre 2011 et 2021 soit 0.19 % de gain par an.