Year	% of revenue
2008	1.7801606773328142
2009	1.4209983719259325
2010	1.1535177750731167
2011	0.7715289364052839
2012	0.6988560200440517
2013	0.5111375590209156
2014	0.3402218949058034
2015	0.17650539151084
2016	0.41498264346992786
2017	0.37734277066480515
2018	0.20970206866909644
2019	0.1957560945839806
2020	0.29616325401059573
2021	0.25921588238374793
2022	0.3483949741869139