YearPToutPBase 100
201196.4%100
201293.8%100.5
201396.57%101.1
201495.7%101.6
201595.82%102.1
201695.93%102.7
201798.15%103.2
201898.11%103.7
2019100%104.3
202099.12%104.8
Evolution : 4 % entre 2011 et 2020 soit 0.47 % de gain par an.