Year	current US$
1960	1462000000
1961	1460000000
1962	1475000000
1963	1487000000
1964	1263000000
1965	1096000000
1966	1496000000
1967	1667000000
1968	2132000000
1969	2265000000
1970	2849000000
1971	3701000000
1972	4783000000
1973	6999000000
1974	14168000000
1975	13592000000
1976	13726000000
1977	13257000000
1978	15054000000
1979	19804000000
1980	24961000000
1981	24079000000
1982	21069000000
1983	16801000000
1984	15210000000
1985	14332000000
1986	15557000000
1987	16581000000
1988	16055000000
1989	19885000000
1990	22522000000
1991	22947000000
1992	23116000000
1993	27604000000
1994	36192000000
1995	54137000000
1996	56981000000
1997	64242000000
1998	60652000000
1999	51767000000
2000	58643000000
2001	58382000000
2002	49723000000
2003	50881000000
2004	66433000000
2005	77628000000
2006	97049000000
2007	128111000000
2008	183921000000
2009	135378000000
2010	193184000000
2011	238706000000
2012	235404000000
2013	252282000000
2014	240763000000
2015	180460000000
2016	145248000000
2017	165855000000
2018	192840000000
2019	193162000000
2020	166336000000
2021	234690000000
2022	292245000000
2023	252710000000