Year	current US$
1960	874000000
1961	1029000000
1962	1100000000
1963	1206000000
1964	1352000000
1965	1510000000
1966	1594000000
1967	1702000000
1968	1790000000
1969	2084000000
1970	2317000000
1971	2500000000
1972	3292000000
1973	4433000000
1974	5130000000
1975	6091000000
1976	4934000000
1977	5832000000
1978	6408000000
1979	7930000000
1980	8610000000
1981	8730000000
1982	8860000000
1983	8770000000
1984	8620000000
1985	8470000000
1986	9170000000
1987	9580000000
1988	10000000000
1989	9670000000
1990	10000000000
1991	10185000000
1992	10705000000
1993	8905000000
1994	10700000000
1995	12865000000
1996	15705000000
1997	19100000000
1998	23005000000
1999	25032000000
2000	28192000000
2001	30436000000
2002	34517000000
2003	43094000000
2004	55567000000
2005	62936000000
2006	75255000000
2007	95400000000
2008	108504000000
2009	83008000000
2010	95483000000
2011	112312000000
2012	103570000000
2013	107503000000
2014	110622000000
2015	98524000000
2016	101919000000
2017	113806000000
2018	124705000000
2019	123796000000
2020	120654000000
2021	141830000000
2022	151672000000
2023	160955000000