Year	current US$
1960	344200000
1961	399200000
1962	383900000
1963	387800000
1964	458100000
1965	490900000
1966	689400000
1967	683000000
1968	654500000
1969	704960000
1970	709930000
1971	827490000
1972	1078130000
1973	1562300000
1974	2440550000
1975	2201500000
1976	2974520000
1977	3481580000
1978	4081100000
1979	5296550000
1980	6498930000
1981	7026520000
1982	6933610000
1983	6363390000
1984	7410560000
1985	7118850000
1986	8861040000
1987	11559530000
1988	15906189297
1989	20178659338
1990	23064365641
1991	28857300819
1992	32454895848
1993	37312341570
1994	46121601507
1995	58672776982
1996	56450801725
1997	58431332132
1998	55391519395
1999	58491914835
2000	68962672351
2001	65113243881
2002	68849790694
2003	80321711634
2004	96217639521
2005	110162000000
2006	130561000000
2007	153856000000
2008	175894000000
2009	151901000000
2010	193361000000
2011	220212000000
2012	227355000000
2013	224437000000
2014	224695000000
2015	210685000000
2016	213762000000
2017	235925000000
2018	250607000000
2019	245370000000
2020	229256000000