YearPToutPBase 100
201199.85%100
201299.52%98.8
2013100%97.7
201498.67%96.5
201599.08%95.3
201696.54%94.2
201794.01%93
201895.34%91.9
201991.83%90.7
202093.38%89.5
202185.97%88.4
Evolution : -11 % entre 2011 et 2021 soit 1.11 % de perte par an.