YearPToutPBase 100
201192.4%100
201294.71%97.7
201393.1%95.4
2014100%93.1
201595.86%90.8
201696.93%88.5
201798.22%86.2
201891.62%83.8
201984.82%81.5
202073.99%79.2
202165.34%76.9
Evolution : -23 % entre 2011 et 2021 soit 2.36 % de perte par an.