Year	current US$
1984	62000000
1986	4000000000
1989	542600000
1992	1881000000
1993	1529700000
1994	272000000
1995	914470000
1996	2512900000
1997	5080700000
1998	2982800000
1999	3965000000
2000	43300000
2001	508930000
2002	1329770000
2003	2810590000
2004	788690000
2005	1678120000
2006	1197580000
2007	1529040000
2008	678770000
2009	722000000
2010	421470000
2011	2671140000
2012	3174900000
2013	3682930000
2014	1647500000
2015	3186650000
2016	3386891000
2017	2950270000
2018	265510000
2019	9710000
2020	838180000
2021	264410000.00000003
2022	327400000