Year	current US$
1987	4779.262859457271
1988	5871.212121212121
1989	5950.638962052483
1990	3000000000
1991	1766666666.6666665
1992	1330000000
1993	1266606260.2965405
1994	1452431596.5449986
1995	686962011.2969321
1996	412452356.18849504
1997	548000077.0712909
1998	594735925.6650336
1999	533561535.9120225
2000	703050139.1348343
2001	787524463.137543
2002	992558006.0801347
2003	1255516976.2076762
2004	1595471619.3656094
2005	2132207924.7520928
2006	2514950014.968269
2007	3135124262.7920394
2008	3616332794.9170647
2009	3181108263.6380887
2010	4034702206.4227853
2011	5240466055.339624
2012	6021090344.452533
2013	7171991823.72922
2014	7039423515.306113
2015	6110413018.399166
2016	6177710295.872989
2017	7557302009.689417
2018	8896766541.724207
2019	9578376986.379114
2020	5908062642.698652
2021	8045446645.347574
2022	13111621768.054317
2023	15080402213.888746