Year	% of revenue
2013	13.801208241660873
2014	15.666093052435592
2015	17.11286909223387
2016	16.36204601642594
2017	19.491002724895516
2018	17.617083758537895
2019	17.871770299171956
2020	19.533762087473338
2021	16.68280885787688
2022	16.054216773819384