Year	% of revenue
2011	3.5194918847057046
2012	4.598551209174971
2013	1.059405298993266
2014	0.07978591498513488
2015	0.058209656333451126
2016	0.06341366473680239
2017	0.12167819985995061
2018	0.1851394471653766
2019	0.6681353044350684
2021	0.7850765015741831
2022	0.849321564789015