Year	current US$
1960	325200000
1961	322300000
1962	322600000
1963	304600000
1964	321200000
1965	317700000
1966	268100000.00000003
1967	305100000
1968	331500000
1969	326812000
1970	458070000
1971	337658000
1972	429518000
1973	626858000
1974	729438000
1975	807209000
1976	828617000
1977	1010478000
1978	890553000
1979	1041236000.0000001
1980	1205865000
1981	1046364000
1982	804245000
1983	713830000
1984	415939000
1985	454955000
1986	876415843.8
1987	951430544.1999999
1988	859652295
1989	1017714387
1990	1235127233
1991	617368000
1992	1237009000
1993	1147849172
1994	1518096706
1995	1488423867
1996	1553705323
1997	1547493528
1998	1756058983
1999	1754208756
2000	1565697664
2001	1652606145
2002	2084817375
2003	2311759061
2004	1657112087
2005	3056767104
2006	3569081336
2007	3532432644
2008	3807471062
2009	5068797968
2010	5231255987
2011	18143330624
2012	15760610311
2013	12543743136
2014	14421449794
2015	13743295841
2016	10537196400
2017	14357516749
2018	17098580538.999998
2019	16776958567.999998
2020	18585066485