Year	current US$
2007	16910321
2008	7425965
2009	4537422
2010	7200494
2011	10332315
2012	45373920
2013	73389339
2014	33923114
2015	13926421
2016	11727294
2017	14069402
2018	21177987
2019	27996627
2020	33914977
2021	22212874
2022	49457683