Year	current US$
1960	263649999.99999997
1961	270100000
1968	1361660000
1969	1879100000
1970	2440340000
1971	2684190000
1972	2462840000
1973	3275780000
1974	4455850000
1975	5401970000
1976	5540370000
1977	6529870000
1978	7943750000
1979	8692070000
1980	9234850000
1981	9152100000
1982	8830640000
1983	8508059999.999999
1984	8091490000
1985	8228180000
1986	9596180000
1987	9845020000
1988	9340250000
1989	8885179408
1990	8621367426
1991	11082300000
1992	11110400000
1993	12386900000
1994	14449400000
1995	15483300000
1996	16209132000
1997	21234028000
1998	25726973000
1999	27893888000
2000	31964707492
2001	33599215307
2002	37749668703
2003	47881371488
2004	60481947645
2005	66411969962.99999
2006	78366128686
2007	95715136800
2008	109233000000
2009	77900129720
2010	88172703518
2011	102429000000
2012	95206635229
2013	100120000000
2014	104897000000
2015	91973559444
2016	93880231797
2017	107519000000
2018	120741000000
2019	120589000000
2020	115353000000