YearPToutPBase 100
201095.2%100
201195.42%100.3
201293.54%100.5
201394.73%100.8
201496.87%101
201598.82%101.3
201698.51%101.5
201789.28%101.8
201897%102.1
201998.79%102.3
2020100%102.6
202195.53%102.8
Evolution : 2 % entre 2010 et 2021 soit 0.23 % de gain par an.