YearPToutPBase 100
201097.26%100
201190.57%100.3
201293.06%100.6
201396.74%100.9
201494.9%101.2
201593.77%101.5
201694.87%101.8
201791.75%102.1
2018100%102.4
201993.33%102.7
202099.07%103
Evolution : 3 % entre 2010 et 2020 soit 0.27 % de gain par an.