Year	current US$
1997	36533792.6643927
1998	53581256.100899
1999	55177844.5060535
2000	92859180.9251688
2001	92557545.7069105
2002	89508809.9390934
2003	111851625.058852
2004	157527254.761396
2005	168219798.257725
2006	175114985.160821
2007	40086648.5208877
2008	103849505.01099
2009	174563185.793792
2010	324188008.866534
2011	289292135.239755
2012	297890451.23968
2013	460726487.523759
2014	177442155.16602
2015	64442293.0361046
2016	107303103.315511
2017	641772480.757934
2018	366793958.381258
2019	519592242.318905
2020	1394586287.79538
2021	2382718715.83747
2022	3354506559.25392