YearPToutPBase 100
201188.15%100
201294.92%100.8
201396.57%101.5
201496.53%102.3
201595.87%103.1
201697.98%103.8
201797.9%104.6
2018100%105.3
201998.98%106.1
202098.35%106.9
202197.81%107.6
Evolution : 7 % entre 2011 et 2021 soit 0.67 % de gain par an.