YearPToutPBase 100
2010100%100
201195.34%99.4
201297.37%98.8
201396.46%98.3
201495.17%97.7
201598.01%97.1
201689.97%96.5
201799.53%96
201898.33%95.4
201996.27%94.8
202089.05%94.2
202189.78%93.7
Evolution : -6 % entre 2010 et 2021 soit 0.54 % de perte par an.