YearPToutPBase 100
201186.03%100
201294.2%100.1
201394.02%100.2
2014100%100.4
201596.73%100.5
201697.17%100.6
201796.95%100.7
201896.23%100.9
201996.04%101
202093.05%101.1
202189.72%101.2
Evolution : 1 % entre 2011 et 2021 soit 0.11 % de gain par an.