YearPToutPBase 100
200968.31%100
201067.66%98.8
2011100%97.7
201269.83%96.5
201363.41%95.4
201461.57%94.2
201565.88%93.1
201660.96%91.9
201767.48%90.7
201860.89%89.6
201968.23%88.4
202066.48%87.3
202167.89%86.1
Evolution : -13 % entre 2009 et 2021 soit 1.14 % de perte par an.