YearPToutPBase 100
201196.71%100
201292.06%100.4
201396.3%100.8
201495.9%101.1
201597.4%101.5
201678.21%101.9
201797.9%102.3
2018100%102.7
201998.03%103.1
202098.79%103.4
202196.4%103.8
Evolution : 3 % entre 2011 et 2021 soit 0.34 % de gain par an.