YearPToutPBase 100
201098.81%100
201196.69%100.2
201294.75%100.4
201397.35%100.5
201497.88%100.7
201597.84%100.9
201698.64%101.1
201797.37%101.3
2018100%101.4
201997.46%101.6
202098.75%101.8
Evolution : 1 % entre 2010 et 2020 soit 0.16 % de gain par an.