Year	current US$
1960	634000000
1961	732000000
1962	766000000
1963	858000000
1964	974000000
1965	1041000000
1966	1043000000
1967	1086000000
1968	1175000000
1969	1416000000
1970	1621000000
1971	1837000000
1972	2102000000
1973	2789000000
1974	3814000000
1975	3778000000
1976	4200000000
1977	5396000000
1978	7121000000
1979	9884000000
1980	11153000000
1981	10608000000
1982	9702000000
1983	9159000000
1984	9675000000
1985	10020000000
1986	11621000000
1987	13642000000
1988	15567000000
1989	17420000000
1990	20669000000
1991	20771000000
1992	22477000000
1993	21161000000
1994	25612000000
1995	32340000000
1996	34320000000
1997	37748000000
1998	43191000000
1999	46769000000
2000	51041000000
2001	50556000000
2002	52399000000
2003	53886000000
2004	61814000000
2005	68565000000
2006	73118000000
2007	83822000000
2008	83965000000
2009	62704000000
2010	60276000000
2011	66606000000
2012	62769000000
2013	72134000000
2014	82016000000
2015	76977000000
2016	81185000000
2017	93198000000
2018	107669000000
2019	101104000000
2020	99823000000
2021	120301000000
2022	147269000000
2023	147065000000