Year	% of revenue
1994	1.6629162058049505
1995	3.6685435095802506
1996	4.76187020484847
1997	2.5616237955008376
1998	2.218503321588867
1999	2.1380293420462553
2000	3.4047760174830106
2001	3.059859359740884
2002	2.849827477117229
2003	2.689884248921862
2004	2.49800759892503
2005	1.8373707053132706
2006	1.5175453557995278
2007	1.3826445418150373
2008	1.7672353372224885
2009	4.5013715579037985
2010	5.5375033898324055
2011	5.628961419613774
2012	5.352352722782022
2013	4.883630525449139
2014	4.761305204777627
2015	4.384007388195919
2016	3.6955549250796715
2017	3.264591225287594
2018	2.4722746156017106
2019	2.341253125460578
2020	2.125116524889185
2021	1.5927247168284986
2022	1.4743681758888514