Year	current US$
1960	563700000
1961	670900000
1962	561500000
1963	684837000
1964	781602000
1965	837744000
1966	930782000
1967	962313000
1968	1001199000
1969	1064611000
1970	1233784000
1971	1490728000
1972	1645021000
1973	2009984000
1974	4864204000
1975	5881623000
1976	6484376000
1977	6907380000
1978	6750783000
1979	8149189000
1980	10732306666.67
1981	11999717794.606998
1982	9421233245.798
1983	7991879690.25
1984	7356211332.594001
1985	6442443240.654
1986	5774476252.278
1987	5872530249.716
1988	5596760942.900001
1989	6627591423.839998
1990	5363793757.34
1991	5169976257.339999
1992	5599265835.54
1993	6160156310.42
1994	6088540455.37
1995	7064397268.5
1996	6788319006.7699995
1997	6672119677.35
1998	5875110559.280001
1999	6706641846.39
2000	6623936781
2001	7338044508
2002	6955655681
2003	8769789798
2004	10741214236
2005	14302588548
2006	20277506224
2007	20290618760
2008	26737514908
2009	14945870111
2010	17185515222
2011	22500808208
2012	19150931311
2013	24697492432
2014	23688155429
2015	14048219353
2016	10131567989
2017	11644409140
2018	14805749854
2019	11480421226
2020	12420205083