Year	current US$
1977	832500000
1978	1795400000
1979	4319860000
1980	3954900000
1981	1396230000
1982	972900000
1983	1386290000
1984	1170700000
1985	2035830000
1986	1590930000
1987	1418130000
1988	2552540000
1989	3197870000
1990	3615300000
1991	18639700000
1992	18623100000
1993	44055310000
1994	36867200000
1995	37783780000
1996	44692350000
1997	59251850000
1998	45332800000
1999	55847580000
2000	45839340000
2001	33384000000
2002	16571000000
2003	34994620000
2004	40593870000
2005	47590300000
2006	51240130000
2007	57070160000
2008	39850360000
2009	45744930000
2010	63909790000
2011	43579790000
2012	34254750000
2013	53104790000
2014	60142040000
2015	56134630000
2016	63601116144.457
2017	108740050000
2018	45986050000
2019	39393540000
2020	32250420000
2021	41751170000
2022	52947830000