Year	current US$
1980	291000000
1981	189000000
1982	132000000
1983	64000000
1984	48000000
1985	71000000
1986	107000000
1987	1202000000
1988	832000000
1989	1429000000
1990	7977000000
1991	4785000000
1992	2755000000
1993	5037000000
1994	5008500000
1995	5950100000
1996	8234400000
1997	21136600000
1998	50019500000
1999	183894700000
2000	91619800000
2001	37130260000
2002	20448960000
2003	33877540000
2004	39892350000
2005	49161710000
2006	86545360000
2007	121523700000
2008	81801420000
2009	59313130000
2010	40642980000
2011	22978960000
2012	15077480000
2013	24010790000
2014	33050379999.999996
2015	17942840000
2016	12224003416.8565
2017	15211933446.4284
2018	11885400000
2019	15426070000
2020	16482780000
2021	16489340000
2022	18656540000