YearPToutPBase 100
201094.43%100
201193.26%97.5
201291.89%95.1
201392.66%92.6
201481.25%90.1
201578.01%87.6
201670.16%85.2
201771.36%82.7
201863.9%80.2
201966.25%77.8
202054.06%75.3
2021100%72.8
Evolution : -27 % entre 2010 et 2021 soit 2.61 % de perte par an.