Year	% of revenue
2005	4.405556251762107
2006	3.974781836495131
2007	2.387898938091463
2008	4.3829143044079215
2009	1.6180065357735296
2010	0.134657518151067
2011	0.4704120139150684
2012	0.34951620286649254
2013	0.3359208375768914
2014	0.38714301884958024
2015	0.30952169681789565
2016	0.4316689039994289
2017	0.4124164407754848
2018	0.3338567789550791
2019	0.37252085432756
2020	0.4075456832377035
2021	0.3528055528919795
2022	0.3483949741869139