Year	current US$
1980	357000000
1981	490000000
1982	124000000
1983	62000000
1984	54000000
1985	43000000
1986	52000000
1987	105000000
1988	95000000
1989	101000000
1990	108000000
1991	358000000
1992	828000000
1993	908000000
1994	2633000000
1995	1202000000
1996	2557000000
1997	2389000000
1998	3263000000
1999	1382000000
2000	1179000000
2001	784000000
2002	1031000000
2003	805800000
2004	2079600000
2005	9548720000
2006	15617180000
2007	17247590000
2008	18034040000
2009	19849620000
2010	22697170000
2011	25946340000
2012	32202940000
2013	20409200000
2014	17216000000
2015	11586530000
2016	14167836235.6802
2017	13865382953.3394
2018	13662420000
2019	13904860000
2020	10000100000
2021	7167570000
2022	6502170000