Year	current US$
1960	2511800000
1961	2404200000
1962	2582100000
1963	2607500000
1964	2720700000
1965	2759400000
1966	2693200000
1967	2843900000
1968	2835700000
1969	2869700000
1970	3169500000
1972	3126000000
1973	4792000000
1974	10998900000
1975	8732200000
1976	9259900000
1977	9507200000
1978	9157700000
1979	14245300000
1980	19260600000
1981	20001900000
1982	16957000000
1983	14755000000
1984	16094000000
1985	14189000000
1986	8412000000
1987	9062900000
1988	10148185000
1989	12432647000
1990	18044425000
1991	16337145000
1992	14065247000
1993	14692327000
1994	17089793000.000002
1995	19093028400
1996	26599353591
1997	26320104834
1998	20191426098
1999	20823000000
2000	33290038394.000004
2001	26895089055
2002	26627935361
2003	27232442986
2004	39672286607
2005	55731830428
2006	65594820737
2007	70201212093
2008	95965396000
2009	58493260167
2010	65897677144
2011	86229083183
2012	84143663148
2013	80769845195
2014	74734003621
2015	37248631252
2016	26795724237
2017	32664002782
2018	35083941903
2019	17630869457
2020	5164528770