Year	current US$
1961	46000000
1962	51600000
1963	57600000
1964	62900000
1965	66800000
1966	76900000
1967	79793000
1968	83300000
1970	138811000
1971	132539999.99999999
1972	141558000
1973	168553000
1974	204138000
1975	216003000
1976	236847000
1977	273429000
1978	312573000
1979	424272000
1980	513019000
1981	570741000
1982	552871000
1983	625251000
1984	656899000
1985	607291000
1986	586655000
1987	514602999.99999994
1988	578958000
1989	677774306.5
1990	700289855.2
1991	700786372.6
1992	552823000
1993	574006000
1994	607914880
1995	764484767.9
1996	828904010.3
1997	995500874
1998	1021882253
1999	1108162477
2000	1156117447
2001	1068630627.9999999
2002	1070772800
2003	1202086659
2004	1476170738
2005	1599477419
2006	1619379375
2007	1304487498
2008	1749128641
2009	1345848744
2010	1201023290
2011	1781067283
2012	1772966122
2013	1774139715
2014	1745318897
2015	1623180579
2016	1626791953
2017	1602017013
2018	2037256998
2019	1583831300
2020	1499450245