Year	% of revenue
1995	6.109578242018132
1996	10.798816568047338
1997	3.394922637824846
1998	4.763250883392226
1999	6.566296719943117
2000	4.570842357232418
2001	5.044272243063888
2002	1.500844224876493
2003	1.129185091598231
2004	0.8878775710525142
2005	0.11071744906997344
2006	0.6190996442278063
2007	0.5222740597002601
2008	1.661634118887241
2009	1.2239902080783354
2010	1.1535177750731167
2011	0.5906601858118501
2012	0.4896982512764152
2013	0.36953853385913144
2014	0.29330077096202656
2015	0.27641404348364207
2016	5.029800565446626
2017	1.6265638417888835
2018	0.45712072869926845
2019	1.580897979880836
2020	0.5748987214821015
2021	0.7770209018622601
2022	0.7816611064847219