YearPToutPBase 100
201196.2%100
201298.18%99.3
2013100%98.6
201498.53%97.9
201599.34%97.1
201697%96.4
201794.53%95.7
201894.49%95
201991.89%94.3
202094.28%93.6
202191.08%92.8
Evolution : -7 % entre 2011 et 2021 soit 0.68 % de perte par an.