YearPToutPBase 100
2009100%100
201099.82%99.2
201197.45%98.4
201297.6%97.7
201395.71%96.9
201495.47%96.1
201591.5%95.3
201692.28%94.6
201791.09%93.8
201894.47%93
201991.78%92.2
202090.73%91.5
202191.62%90.7
Evolution : -9 % entre 2009 et 2021 soit 0.75 % de perte par an.