Year	% of revenue
1994	2.081120231772091
1995	1.9803634554917495
1996	1.8531698761483781
1997	2.219312878771882
1998	1.5821199757085265
1999	2.1098926326825973
2000	0.963239941015378
2001	0.918264154372733
2002	0.9705752859458237
2003	1.1288423803705823
2004	1.0108901907888945
2005	0.9833553122965675
2006	1.0448078034195862
2007	0.7604084761512732
2008	1.614882357802641
2009	1.2239902080783354
2010	1.1241600999687966
2011	0.89050953182833
2012	0.8577336024803783
2013	0.790507709646967
2014	0.6512430400319572
2015	0.4624825919778566
2016	0.4640380439744521
2017	0.4755374347089182
2018	0.3946210737815655
2019	0.46389586322968723
2020	0.4075456832377035
2021	0.5048175501163226
2022	0.5257275907543755