YearPToutPBase 100
2009100%100
201093.8%100.1
201190.13%100.3
201294.62%100.4
201392.37%100.5
201495.26%100.7
201594.71%100.8
201698.91%100.9
201797.09%101.1
201892.17%101.2
201990.89%101.3
202095.17%101.5
202197.88%101.6
202298.76%101.7
Evolution : 1 % entre 2009 et 2022 soit 0.12 % de gain par an.