Year	% of revenue
2005	1.856496287647473
2006	2.0982838486734012
2007	0.04585052728106374
2008	0.061460866547079926
2009	0.4332742965915708
2010	0.45634592222019876
2011	0.08989992320306026
2012	1.8734795785483827
2013	1.8109591950518131
2014	1.7105795394442564
2015	1.7625378608341595
2016	1.3927410505298328
2017	1.7414345408417329
2018	1.8721192126929698
2019	1.9207569895250673
2020	1.7367500024530131
2021	1.6986600273904977