YearPToutPBase 100
200799.57%100
2008100%97.6
200994.11%95.2
201098.96%92.7
201186.47%90.3
201292.44%87.9
201398.88%85.5
201495.2%83
201592.58%80.6
201697.19%78.2
201787.99%75.8
201878.58%73.3
201967.47%70.9
202062.05%68.5
202159.55%66.1
Evolution : -33 % entre 2007 et 2021 soit 2.72 % de perte par an.