YearPToutPBase 100
201096.52%100
201194.07%100.2
201295.66%100.4
201398.31%100.6
201497.08%100.8
201596.9%100.9
201694.19%101.1
2017100%101.3
201897.53%101.5
201997.67%101.7
202096.42%101.9
Evolution : 1 % entre 2010 et 2020 soit 0.17 % de gain par an.