Year	% of revenue
1994	15.599374499408825
1995	5.885259707268184
1996	6.572890334909712
1997	11.364524933721572
1998	11.788476288041956
1999	11.81129476584022
2000	11.159999024480245
2001	12.936362884931532
2002	13.32506651730721
2003	11.639527151467345
2004	12.164244614619928
2005	12.205854671843076
2006	12.171373963881841
2007	13.715623077312003
2008	15.615317818633773
2009	8.727614855329827
2010	7.401547516777572
2011	8.078252349831502
2012	9.115767370223374
2013	9.33923505963921
2014	9.0557653534468
2015	9.260041722638366
2016	10.220017022848888
2017	10.289399316598251
2018	7.173175776823445
2019	4.717438741188307
2020	6.1593237174294675
2021	7.463054074213815
2022	8.311181125324609