Year	current US$
1975	67000000
1976	96000000
1977	74000000
1978	85000000
1979	91200000
1980	105300000
1981	84300000
1982	73100000
1983	132600000
1984	113400000
1985	801730000
1986	1195600000
1987	1383730000
1988	1989650000
1989	26209560000
1990	57671350000
1991	7685860000
1992	4757560000
1993	6586150000
1994	8772950000
1995	13000810000
1996	10338400000
1997	12071580000
1998	18056390000
1999	11813170000
2000	9665760000
2001	7313690000
2002	6507290000
2003	12035820000
2004	25927690000
2005	43328140000
2006	82970200000
2007	129135230000
2008	98137240000
2009	51509760000
2010	48838610000
2011	38787870000
2012	23639550000
2013	26528040000
2014	28719260000
2015	31732950000
2016	26552486712.2248
2017	39986893431.8602
2018	39431840000
2019	33479930000
2020	39779610000
2021	35245190000
2022	37394110000