YearPToutPBase 100
2008100%100
200993.59%99.3
201093.73%98.7
201193.55%98
201294.4%97.4
201393.73%96.7
201493.64%96.1
201595.21%95.4
201690.23%94.7
201794.7%94.1
201892.69%93.4
201990.38%92.8
202088.52%92.1
202185.32%91.5
Evolution : -8 % entre 2008 et 2021 soit 0.63 % de perte par an.