YearPToutPBase 100
201195.7%100
201296.25%100.4
201395.37%100.8
201496.31%101.2
201597.43%101.7
201695.75%102.1
201796.22%102.5
2018100%102.9
201998.11%103.3
202098.94%103.7
202199.36%104.1
Evolution : 4 % entre 2011 et 2021 soit 0.37 % de gain par an.