Year	current US$
1960	4300200000
1961	4157400000
1962	2842300000
1963	3403000000
1964	4539800000
1965	4098700000
1966	5278800000
1967	5096170000
1968	5660260000
1969	6038730000
1970	5160610000
1971	5804740000
1972	7028320000
1973	13346410000
1974	21912130000
1975	34444260000
1976	36670590000
1977	43831380000
1978	43556540000
1979	39006690000
1980	47289930000
1981	82766552681.40001
1982	79906776820
1983	74581220808
1984	69799926352
1985	58625262412.9
1986	54131581206.4
1987	49900702360.3
1988	55471461121.6
1989	60595653084.1
1990	74003410534.1
1991	75394601951
1992	80967190201.8
1993	71826147950.8
1994	66977503388.9
1995	75406880904.5
1996	79922034274
1997	80113629415.6
1998	81983979499
1999	82646040754.5
2000	93954416136
2001	102409788024
2002	109054668978
2003	121619980101
2004	158035101463
2005	160808706131
2006	176333281436
2007	264699585569
2008	371225304234
2009	334649026906
2010	389170418690
2011	349168490746
2012	373490275305
2013	377668901980
2014	381526464894
2015	318383899445
2016	295589966296
2017	322701091046
2018	335751520630
2019	319240150759
2020	269337503651