Year	current US$
1960	344000000
1961	316000000
1962	422000000
1963	560000000
1964	404000000
1965	463000000
1966	716000000
1967	996000000
1968	1463000000
1969	1824000000
1970	1984000000
1971	2394000000
1972	2522000000
1973	4240000000
1974	6852000000
1975	7274000000
1976	8774000000
1977	10811000000
1978	14972000000
1979	20339000000
1980	22292000000
1981	26131000000
1982	24251000000
1983	26192000000
1984	30631000000
1985	31136000000
1986	31585000000
1987	41020000000
1988	51811000000
1989	61465000000
1990	69844000000
1991	81525000000
1992	81775000000
1993	83800000000
1994	102348000000
1995	135119000000
1996	150339000000
1997	144616000000
1998	93282000000
1999	119752000000
2000	160481000000
2001	141098000000
2002	152126000000
2003	178827000000
2004	224463000000
2005	261238000000
2006	309383000000
2007	356846000000
2008	435275000000
2009	323085000000
2010	425212000000
2011	524413000000
2012	519585000000
2013	515584000000
2014	525564000000
2015	436499000000
2016	406193000000
2017	478478000000
2018	535202000000
2019	503343000000
2020	467633000000
2021	615093000000
2022	731370000000
2023	642572000000