Year	% of revenue
2010	36.234905480534316
2011	31.85117029845127
2012	27.7705180021236
2013	26.34995997666656
2014	22.33360288103329
2015	23.754347522073598
2016	12.118936295632144
2017	11.959626693501004
2018	11.876063371114125
2019	9.860371444101556
2020	18.73201315283144
2021	16.94490244508949
2022	20.35400380224074