YearPToutPBase 100
201194.25%100
201297.11%100.5
201395.54%101
201496.18%101.5
201598.19%102
201694.53%102.5
201797.63%102.9
201899.67%103.4
201999.16%103.9
2020100%104.4
202198.77%104.9
Evolution : 4 % entre 2011 et 2021 soit 0.44 % de gain par an.