Year	current US$
1960	905500000
1963	1146900000
1964	1341000000
1965	1503600000
1966	1646600000
1967	1796100000
1968	1947800000
1969	2231300000
1970	2513400000
1971	2879100000
1972	3107800000
1973	3496200000
1974	4261500000
1975	4950700000
1976	5431800000
1977	6108100000
1978	6556200000
1979	7386800000
1980	8638200000
1981	9239200000
1982	8490500000
1983	8506799999.999999
1984	9528400000
1985	10112200000
1986	10098900000
1987	10723800000
1988	11859100000
1989	14042800000
1990	15721600000
1991	15904300000
1992	15387300000
1993	16385900000.000002
1994	16654200000
1995	18816600000
1996	19060900000
1997	21387400000
1998	21797500000
1999	25299400000
2000	27042800000
2001	29149300000
2002	28984600000
2003	33749699999.999996
2004	38897600000
2005	38905200000
2006	42630200000
2007	45265800000
2008	44928300000
2009	40651000000
2010	40810100000
2011	44662200000
2012	46576200000
2013	45100800000
2014	42580400000
2015	43092800000
2016	43316300000
2017	45938000000
2018	46488400000
2019	49401600000
2020	44513200000
2021	45051300000
2022	52150000000
2023	56359200000