Year	% of revenue
2015	0.4298135877839569
2016	0.48517248741305397
2017	0.6528939350342867
2018	0.47495911479247244
2019	0.5234034017917019
2020	0.45528393981626397
2021	0.5523968756328242
2022	0.4451553569645648