Year	current US$
1960	1586750000
1961	1593350000
1962	1610620000
1963	1623050000
1964	1386770000
1965	1205710000
1966	1646700000
1967	1837220000
1968	2347510000
1969	2489157000
1970	3134230000
1971	4068900000
1972	5261476000
1973	7700088000
1974	15585372000
1975	14951431000
1976	15136649000
1977	14579378000
1978	16559576000
1979	21784521000
1980	27456451000
1981	26482302000
1982	23176175000
1983	18483102000
1984	16730901000.000002
1985	15767906000
1986	17112480000
1987	18240882000
1988	17652932000
1989	22031636746
1990	24977290402
1991	25531288428
1992	22609503400
1993	30984228000
1994	36386556800
1995	54354294060
1996	58898105654
1997	68135502152.99999
1998	63313912200
1999	54781926079
2000	59950361042
2001	59220182488
2002	50066305041
2003	51363876365
2004	66639335686.00001
2005	77988540848
2006	97495729547
2007	129503000000
2008	183509000000
2009	133592000000
2010	192491000000
2011	239784000000
2012	236493000000
2013	253986000000
2014	242804000000
2015	181744000000
2016	145074000000
2017	159782000000
2018	189966000000
2019	187974000000
2020	168469000000