Year	% of revenue
2012	7.4605799546230696
2013	11.23290580178672
2014	12.958217726834603
2015	10.643704589094988
2016	15.855262142078466
2017	14.87709180492387
2018	10.201244153080841
2019	10.618119695372073
2020	10.556664998885608
2021	13.95133991901022