YearPToutPBase 100
201091.2%100
201193.04%100.6
201293%101.3
201394.61%101.9
201495.26%102.5
201597.03%103.2
201698.07%103.8
201798.4%104.4
2018100%105
201994.66%105.7
202097.14%106.3
202198.58%106.9
Evolution : 6 % entre 2010 et 2021 soit 0.56 % de gain par an.