Year	% of revenue
2010	0.8563266138763296
2011	1.3009017386030042
2012	0.23052453809689258
2014	0.41143655193252715
2015	0.3882101821612932
2016	0.7001847734802821
2017	0.8400779552161701
2018	1.034578120767594
2019	1.0559668935829694
2020	0.4671284106772999
2021	0.6102260515364328