Year	% of revenue
1995	2.8463498199068784
2001	14.733416648428122
2002	14.46914802953589
2003	3.4586815227483756
2004	3.0127793246234025
2005	0.42092188793817276
2006	0.2946020863184113
2007	1.9031544639739262
2008	1.505042514341438
2009	0.35225466158060376
2010	0.36677844676472826
2011	0.3855150873616393
2012	0.4041428946089918
2013	0.4584322175496045
2014	0.44769277955166215
2015	4.044924330111666
2016	4.368208550078491
2017	4.231951380536511
2018	4.578770091259714
2019	5.36244891661437
2020	5.172079307824605
2021	5.554665202246504
2022	5.5146531489037915