Year	% of revenue
2008	0.7915864026827701
2009	0.8106220944090022
2010	0.7567505551618465
2011	1.709995946729745
2012	1.0720438307121942
2013	0.8794806898690418
2014	0.5255618740092273
2015	1.073564077579237
2016	0.9555755712652954
2017	0.9431497916766516
2018	1.0272539712311177
2019	1.0285613453424982
2020	0.7502904821127245