YearPToutPBase 100
201193.92%100
201297.66%100.4
201395.37%100.7
201497.67%101.1
201598.76%101.5
201698.18%101.9
201798.24%102.2
201899.24%102.6
201997.89%103
2020100%103.3
202197.84%103.7
Evolution : 3 % entre 2011 et 2021 soit 0.33 % de gain par an.