Year	current US$
1960	217000000
1961	245000000
1962	279000000
1963	352000000
1964	372000000
1965	430000000
1966	503000000
1967	555000000
1968	639000000
1969	729000000
1970	779000000
1971	958000000
1972	1147000000
1973	1449000000
1974	1825000000
1975	1941000000
1976	2415000000
1977	3082000000
1978	3921000000
1979	4546000000
1980	5538000000
1981	5670000000
1982	5255000000
1983	5108000000
1984	5807000000
1985	6260000000
1986	7154000000
1987	8454000000
1988	9752000000
1989	11072000000
1990	12080000000
1991	11921000000
1992	13119000000
1993	14826000000
1994	16884000000
1995	19046000000
1996	20610000000
1997	22503000000
1998	22993000000
1999	25794000000
2000	31404000000
2001	29048000000
2002	29347000000
2003	31784000000
2004	38618000000
2005	42770000000
2006	46789000000
2007	54092000000
2008	60825000000
2009	47935000000
2010	58415000000
2011	67648000000
2012	63191000000
2013	66607000000
2014	68507000000
2015	64063000000
2016	60571000000
2017	61150000000
2018	61952000000
2019	58507000000
2020	50152000000
2021	60159000000
2022	73585000000
2023	66893000000