YearPToutPBase 100
201096.22%100
201196.27%100.1
201297.33%100.2
201395.73%100.3
201497.38%100.4
201596.96%100.5
2016100%100.6
201793.31%100.7
201897.92%100.8
201997.51%100.9
202097.52%101
Evolution : 1 % entre 2010 et 2020 soit 0.09 % de gain par an.