Year	current US$
1960	498800000
1961	590200000
1962	511300000
1963	637100000
1964	608500000
1965	603500000
1966	758610000
1967	735190000
1968	742740000
1969	907160000
1970	930820000
1971	979960000
1972	941130000
1973	1097600000
1974	1911460000
1975	1534480000
1976	1679400000
1977	2260100000
1978	3002400000
1979	4217600000.0000005
1980	5135800000
1981	6370800000
1982	3536100000
1983	2977600000
1984	3495500000
1985	3088000000
1986	3140800000
1987	4042200000
1988	5077400000
1989	6983700000
1990	7227400000
1991	7630200000
1992	9927779000
1993	10967795000
1994	11627582000
1995	15478900000
1996	19525570000
1997	21147780000
1998	19871740000
1999	16059300000
2000	18534770000
2001	17829760000
2002	17013599999.999998
2003	19264083710
2004	24726904611
2005	32924937863
2006	38977874894
2007	47594961319
2008	62786514864
2009	42803021168
2010	59207444460
2011	74694890948
2012	80073378940
2013	79269464708
2014	72844287133
2015	62387849536
2016	59375710041
2017	65230132920
2018	74684570830
2019	69888172667
2020	59226010078