YearPToutPBase 100
201195.54%100
201295.48%100.4
201394.04%100.8
201496.99%101.3
201596.42%101.7
201695.64%102.1
201795.18%102.5
201897.15%102.9
201998.44%103.4
202097.79%103.8
2021100%104.2
Evolution : 4 % entre 2011 et 2021 soit 0.37 % de gain par an.