Year	current US$
1960	722000000
1961	1092000000
1962	1570000000
1963	1955000000
1964	2255000000
1965	3040000000
1966	3591000000
1967	3441000000
1968	3505000000
1969	4233000000
1970	4747000000
1971	5009000000
1972	6829000000
1973	9667000000
1974	15428000000
1975	16265000000
1976	17474000000
1977	17836000000
1978	18712000000
1979	25438000000
1980	34078000000
1981	32150000000
1982	31465000000
1983	29193000000
1984	28831000000
1985	29963000000
1986	35057000000
1987	49113000000
1988	59643000000
1989	71469000000
1990	87715000000
1991	93306000000
1992	99758000000
1993	77525000000
1994	88863000000
1995	113537000000
1996	121221000000
1997	115670000000
1998	136662000000
1999	135346000000
2000	156143000000
2001	154650000000
2002	165105000000
2003	208602000000
2004	258331000000
2005	288786000000
2006	328696000000
2007	389301000000
2008	420803000000
2009	293218000000
2010	327016000000
2011	376606000000
2012	337338000000
2013	340598000000
2014	358860000000
2015	311851000000
2016	310921000000
2017	351981000000
2018	390562000000
2019	372750000000
2020	326192000000
2021	419700000000
2022	494259000000
2023	470328000000