Year	current US$
1960	97000000
1961	81000000
1962	89000000
1963	110000000
1964	131000000
1965	137000000
1966	159000000
1967	162000000
1968	134000000
1969	123000000
1970	157000000
1971	210000000
1972	231000000
1973	359000000
1974	518000000
1975	484000000
1976	467000000
1977	605000000
1978	675000000
1979	815000000
1980	999000000
1981	1024000000
1982	944000000
1983	818000000
1984	841000000
1985	905000000
1986	1119000000
1987	1590000000
1988	1597000000
1989	1401000000
1990	1680000000
1991	1760000000
1992	1684000000
1993	1341000000
1994	1472000000
1995	1758000000
1996	2042000000
1997	2018000000
1998	2482000000
1999	2516000000
2000	2589000000
2001	2269000000
2002	2275000000
2003	2827000000
2004	3643000000
2005	4979000000
2006	6137000000
2007	6738000000
2008	6205000000
2009	3604000000
2010	3920000000
2011	4841000000
2012	4772000000
2013	5020000000
2014	5375000000
2015	5299000000
2016	5670000000
2017	6965000000
2018	7679000000
2019	6567000000
2020	5697000000
2021	7817000000
2022	9591000000
2023	9464000000