YearPToutPBase 100
201098.94%100
201197.84%100.3
201292.51%100.6
201391.84%100.8
201495.47%101.1
201595.64%101.4
201697.76%101.7
201798.81%102
201896.56%102.3
201995.95%102.5
202098.43%102.8
2021100%103.1
Evolution : 3 % entre 2010 et 2021 soit 0.25 % de gain par an.