Year	% of revenue
2010	2.9513830305598936
2011	2.1635213372347946
2012	2.207796479366437
2013	2.9211120163038813
2014	2.967001589207617
2015	5.142208019011122
2016	4.79912396055966
2017	5.469030186610229
2018	23.165699221259807
2019	16.547213942745735
2020	20.892666857577794
2021	26.035068555109618
2022	19.82831179967525