YearPToutPBase 100
201196.39%100
201295.24%100.2
201399.67%100.4
201497.67%100.5
2015100%100.7
201697.63%100.9
201796.89%101.1
201897.82%101.3
201998.83%101.4
202097.87%101.6
202199.18%101.8
Evolution : 1 % entre 2011 et 2021 soit 0.16 % de gain par an.