Year	current US$
1960	24000000
1961	31000000
1962	36000000
1963	30000000
1964	16000000
1965	24000000
1966	23000000
1967	37000000
1968	35000000
1969	42000000
1970	56000000
1971	57000000
1972	69000000
1973	128000000
1974	120000000
1975	161000000
1976	179000000
1977	207000000
1978	181000000
1979	259000000
1980	286000000
1981	265000000
1982	276000000
1983	227000000
1984	208000000
1985	234000000
1986	221000000
1987	235000000
1988	240000000
1989	222000000
1990	388000000
1991	425000000
1992	407000000
1993	445000000
1994	362000000
1995	431000000
1996	450000000
1997	433000000
1998	399000000
1999	385000000
2000	454000000
2001	465000000
2002	431000000
2003	542000000
2004	923000000
2005	1428000000
2006	1167000000
2007	1432000000
2008	1941000000
2009	1498000000
2010	1935000000
2011	2467000000
2012	3129000000
2013	3978000000
2014	3642000000
2015	3703000000
2016	2174000000
2017	3522000000
2018	3183000000
2019	3520000000
2020	2744000000
2021	3860000000
2022	5120000000
2023	5242000000