Year	current US$
1960	2835500000
1961	2894800000
1962	3084500000
1963	3362300000
1964	3838800000
1965	4362900000
1966	4568300000
1967	4697900000
1968	5117200000
1969	5903000000
1970	7005200000
1971	7076100000
1972	8061700000
1973	10625500000
1974	16456400000.000002
1975	18030700000
1976	19156900000
1977	20114300000
1978	20586800000
1979	28735400000
1980	31388000000
1981	27066000000
1982	26006700000
1983	24545300000
1984	24644900000
1985	26365400000
1986	29826600000
1987	37574600000
1988	42072400000
1989	44843873360
1990	49353982663
1991	45406249055
1992	45535735417
1993	39055185552
1994	48051815909
1995	64567949112
1996	66584114879
1997	65437266839
1998	68238377748
1999	62695107554
2000	72630494179
2001	63260425809
2002	66884547883.00001
2003	83517312822
2004	100453000000
2005	111593000000
2006	127692000000
2007	153429000000
2008	169065000000
2009	120099000000
2010	148837000000
2011	176988000000
2012	164566000000
2013	160617000000
2014	162211000000
2015	138398000000
2016	141021000000
2017	154215000000
2018	170606000000
2019	158971000000
2020	149881000000