Year	current US$
1960	319000000
1961	347000000
1962	380900000
1963	367900000
1964	410900000
1965	454200000
1966	490600000
1967	522500000
1968	495900000
1969	536950000
1970	588490000
1971	676630000
1972	892160000
1973	1316520000
1974	1531960000
1975	1400860000
1976	1960160000
1977	1752710000
1978	2288310000
1979	2258760000
1980	2913780000
1981	6972617273.1
1982	7840196087.5
1983	7651009011.3
1984	9223591475.8
1985	10716855780.6
1986	10193866158.3
1987	13193893823.7
1988	14960005954.1
1989	14915395253.5
1990	15640281083.9
1991	15944924786.3
1992	64981700035.36301
1993	73973025463.45001
1994	106832779532.65
1995	138554438944.66998
1996	146913052867.7
1997	152512536420.1
1998	135843385848.1
1999	134248852499.4
2000	179878303653
2001	164335243884
2002	197237142144
2003	248550830108
2004	323591043670
2005	424038410705
2006	526556885675
2007	647104624727
2008	885356990646
2009	551447620857
2010	704412648758
2011	939647803319
2012	981879746540
2013	980499435328
2014	940953702403
2015	691835622277
2016	624358592325
2017	747099202741
2018	890293038382
2019	868661591424
2020	746661801305