YearPToutPBase 100
201096.68%100
201195.26%99.3
201293.63%98.6
201396.58%97.9
201494.17%97.2
201584.74%96.5
201686.25%95.8
201788.1%95.1
201888.28%94.4
201986.17%93.7
202082.36%93
2021100%92.3
Evolution : -7 % entre 2010 et 2021 soit 0.67 % de perte par an.