Year	current US$
1975	1807000000
1976	1962000000
1978	2148000000
1979	1119220000
1980	887760000
1981	1536270000
1982	1206910000
1983	1189500000
1984	2285720000
1985	3731060000
1986	15808470000
1987	40861730000
1988	26273780000
1989	39543850000
1990	45237610000
1991	48194420000
1992	38079680000
1993	45389680000
1994	69287400000
1995	65931590000
1996	103558370000
1997	190139930000
1998	376134970000
1999	1025852420000
2000	1583553500000
2001	1490411300000
2002	453547920000
2003	618319840000
2004	860943370000
2005	981438310000
2006	1498503960000
2007	2278395800000
2008	1727120120000
2009	1278007430000
2010	1374271440000
2011	1127592290000
2012	864383240000
2013	914963460000
2014	991721470000
2015	978396430000
2016	646295000000
2017	734350000000
2018	623690970000
2019	500184390000
2020	489373270000
2021	398443370000
2022	362703550000