Year	current US$
2008	5262584
2009	5167974
2010	5152322
2011	5386999
2012	2769706
2013	2715493
2014	3352286
2015	2717011
2016	3397552
2017	4217990
2018	4667871
2019	6263592
2020	11123689
2021	1950223
2022	2267149