Year	current US$
1960	724900000
1961	710900000
1962	733900000
1963	736000000
1964	954300000
1965	943700000
1966	1254800000
1967	1383400000
1968	1588440000
1969	1895620000
1970	2390070000
1971	2938590000
1972	3803140000
1973	5158150000
1974	7059040000
1975	7671700000
1976	8725430000
1977	10219990000
1978	13116470000
1979	18206050000
1980	20716730000
1981	20329040000
1982	20490540000
1983	19726500000
1984	23552230000
1985	24232250000
1986	27183670000
1987	34155379999.999996
1988	40287530000
1989	43635004350
1990	55651360367
1991	60262422426
1992	63987319610
1993	62660395187
1994	73256621527
1995	91527199673
1996	102006000000
1997	104147000000
1998	107414000000
1999	103674000000
2000	114978000000
2001	116626000000
2002	125469000000
2003	156212000000
2004	182591000000
2005	192546000000
2006	213706000000
2007	253389000000
2008	282451000000
2009	227456000000
2010	254328000000
2011	306481000000
2012	295481000000
2013	317697000000
2014	324533000000
2015	282273000000
2016	289981000000
2017	319531000000
2018	346754000000
2019	334018000000
2020	307015000000