Year	current US$
1960	6753800000
1961	7099500000
1962	7225500000
1963	7926600000
1964	8804300000
1965	9851500000
1966	10704700000
1967	11157000000
1968	12467700000
1969	15033300000
1970	17818700000
1971	20525200000
1972	26112900000
1973	36184300000
1974	45737700000
1975	52470500000
1976	56476700000
1977	64196200000
1978	78384200000
1979	99344600000
1980	114532000000
1981	105050000000
1982	95286500000
1983	93480800000
1984	96023800000
1985	99975400000
1986	122921000000
1987	145492000000
1988	165545000000
1989	176076000000
1990	212086000000
1991	212366000000
1992	231900000000
1993	212525000000
1994	235992000000
1995	282985000000
1996	281502000000
1997	292944000000
1998	303917000000
1999	323857000000
2000	326711000000
2001	323282000000
2002	331437000000
2003	392231000000
2004	451930000000
2005	463022000000
2006	495739000000
2007	559848000000
2008	617375000000
2009	485218000000
2010	523642000000
2011	596298000000
2012	569162000000
2013	580465000000
2014	581392000000
2015	506264000000
2016	501179000000
2017	535298000000
2018	582222000000
2019	570950000000
2020	488372000000