YearPToutPBase 100
201094.35%100
201194.31%100.6
201293.65%101.1
201391.18%101.7
201491.61%102.3
201597.58%102.8
201691.54%103.4
201797.71%104
2018100%104.5
201999.7%105.1
202095.16%105.7
Evolution : 5 % entre 2010 et 2020 soit 0.51 % de gain par an.