Year	current US$
2008	6276016
2009	16652965
2010	8629674
2011	8063951
2012	9889196
2013	6909504
2014	11118361
2015	11848593
2016	5165280
2017	5133057
2018	4246458
2019	9697706
2020	9914690
2021	13067233
2022	14404160