Year	current US$
2009	2526185
2010	4313163
2011	2783697
2012	816353
2013	1909800
2014	4400040
2015	2850013
2016	4241244
2017	5993524
2018	3263597
2019	5285142
2020	9513473
2021	6433383
2022	3330281