Year	% of expense
2010	15.219192592611911
2011	12.015613249178921
2012	17.423777668781124
2013	14.153951263948986
2014	11.966170590412908
2015	14.903286972382846
2016	33.301059951093585
2017	35.91011669207977
2018	19.30494792446775
2019	22.571468348672315
2020	13.593886536630231
2021	7.738772511546915
2022	14.073705126050145