Year	% of revenue
2006	0.03864564369001725
2007	0.03149195633923984
2008	0.05232999550755016
2009	0.018960428024272724
2010	0.8594881668233662
2011	0.9290345833425364
2012	0.9840247854125042
2013	1.357808650959213
2014	1.8257965386542836
2015	1.4774321202496725
2016	4.416631118070828
2017	2.342422688850999
2018	3.0932344655977326
2019	4.380825598314831
2020	9.005962995173794
2021	7.027416772964632
2022	4.152242556923949