YearPToutPBase 100
2008100%100
200994.78%98.9
201095.4%97.9
201191.68%96.8
201292.99%95.7
201391.01%94.6
201491.8%93.6
201592.12%92.5
201695.14%91.4
201793.44%90.3
201888.73%89.3
201982.06%88.2
202082.66%87.1
202183.18%86.1
Evolution : -13 % entre 2008 et 2021 soit 1.06 % de perte par an.