Year	% of revenue
1995	2.128498226251478
1996	4.311073541842773
1997	9.193330328977016
1998	8.734982332155477
1999	4.21677435310848
2000	6.041262965918158
2001	5.203171550683106
2002	5.592431456980266
2003	6.356601389766267
2004	6.420381028867175
2005	4.5837023914969
2006	3.7089951536543686
2007	1.073448660253499
2008	0.9272990405402991
2009	0.7203483355739712
2010	1.2788606514196443
2011	1.4335814926475112
2012	1.2534605806819605
2013	1.1673761458306129
2014	1.1360915577263804
2015	0.7147572094558357
2016	0.669557576220677
2017	0.6028052332923606
2018	0.6179127345584954
2019	0.5898539160781799
2020	0.5875338582179719
2021	0.5594550493408272
2022	0.6437209112227121