Year	current US$
1960	129000000
1961	135000000
1962	134000000
1963	176000000
1964	213000000
1965	206000000
1966	217000000
1967	219000000
1968	216000000
1969	233000000
1970	282000000
1971	260000000
1972	283000000
1973	291000000
1974	315000000
1975	257000000
1976	364000000
1977	588000000
1978	348000000
1979	435000000
1980	345000000
1981	243000000
1982	349000000
1983	372000000
1984	399000000
1985	387000000
1986	436000000
1987	319000000
1988	271000000
1989	274000000
1990	152000000
1991	200000000
1992	142000000
1993	179000000
1994	409000000
1995	460000000
1996	587000000
1997	555000000
1998	501000000
1999	519000000
2000	403000000
2001	451000000
2002	467000000
2003	532000000
2004	654000000
2005	813000000
2006	962000000
2007	1337000000
2008	1724000000
2009	1568000000
2010	1619000000
2011	2159000000
2012	2357000000
2013	2408000000
2014	2262000000
2015	2267000000
2016	2482000000
2017	2901000000
2018	3087000000
2019	3564000000
2020	4149000000
2021	3965000000
2022	3772000000
2023	6162000000