YearPToutPBase 100
201169.53%100
201263.93%99.4
201370.16%98.8
2014100%98.2
201578.02%97.7
201666.78%97.1
201767.71%96.5
201867.33%95.9
201966.96%95.3
202071.03%94.7
202171.31%94.1
Evolution : -5 % entre 2011 et 2021 soit 0.55 % de perte par an.