Year	current US$
1960	112000000
1961	117000000
1962	126000000
1963	198000000
1964	222000000
1965	228000000
1966	260000000
1967	242000000
1968	252000000
1969	271000000
1970	305000000
1971	314000000
1972	359000000
1973	477000000
1974	603000000
1975	606000000
1976	790000000
1977	1186000000
1978	1023000000
1979	1090000000
1980	1245000000
1981	1139000000
1982	1025000000
1983	869000000
1984	1074000000
1985	958000000
1986	1200000000
1987	961000000
1988	1067000000
1989	951000000
1990	1032000000
1991	1108000000
1992	1339000000
1993	1374000000
1994	1587000000
1995	1879000000
1996	2068000000
1997	2054000000
1998	2008000000
1999	1747000000
2000	1734000000
2001	1944000000
2002	2116000000
2003	2411000000
2004	2684000000
2005	3420000000
2006	3502000000
2007	4081000000
2008	5001000000
2009	4463000000
2010	5169000000
2011	5756000000
2012	6127000000
2013	5856000000
2014	6115000000
2015	5906000000
2016	5695000000
2017	5747000000
2018	6052000000
2019	5839000000
2020	6034000000
2021	6739000000
2022	7411000000
2023	7193000000