Year	current US$
1960	407000000
1961	475000000
1962	456000000
1963	466000000
1964	593000000
1965	622000000
1966	678000000
1967	681000000
1968	658000000
1969	707000000
1970	710000000
1971	831000000
1972	1081000000
1973	1564000000
1974	2444000000
1975	2208000000
1976	2980000000
1977	3490000000
1978	4085000000
1979	5298000000
1980	6505000000
1981	7031000000
1982	6945000000
1983	6368000000
1984	7413000000
1985	7121000000
1986	8876000000
1987	11727000000
1988	15953000000
1989	20078000000
1990	23068000000
1991	28428000000
1992	32472000000
1993	36969000000
1994	45261000000
1995	56439000000
1996	55721000000
1997	57345000000
1998	54477000000
1999	58473000000
2000	68963000000
2001	64968000000
2002	68108000000
2003	80324000000
2004	96248000000
2005	110936000000
2006	129722000000
2007	153867000000
2008	177778000000
2009	152422000000
2010	193306000000
2011	222576000000
2012	229106000000
2013	228505000000
2014	227462000000
2015	214310000000
2016	215388000000
2017	236635000000
2018	252957000000
2019	246269000000
2020	231634000000
2021	272006000000
2022	287425000000
2023	284562000000