YearPToutPBase 100
201086.05%100
201188.15%101.2
201281.58%102.4
2013100%103.6
201497.9%104.8
201596.83%106
201697.2%107.2
201799.8%108.4
201895.24%109.6
201996.4%110.8
202094.85%112
Evolution : 12 % entre 2010 et 2020 soit 1.04 % de gain par an.