Year	current US$
1960	764400000
1961	825600000
1962	930700000
1963	971000000
1964	1054400000.0000001
1965	1141500000
1966	1222700000
1967	1142900000
1968	1253000000
1969	1429500000
1970	1312700000
1971	1396200000
1972	1694900000
1973	2261400000
1974	2992820000
1975	2916400000
1976	3468900000
1977	4170600000.0000005
1978	5953600000
1979	8983000000
1980	15562200000
1981	19380600000
1982	21208900000
1983	22312700000
1984	24382800000
1985	22105600000
1986	16120757880
1987	20535776000
1988	20409467000
1989	23047189000
1990	27167344000
1991	42709768000
1992	46200572000
1993	51761602000
1994	60889730000
1995	79548952000
1996	96013318000
1997	110439000000
1998	117494000000
1999	136391000000
2000	166119000000
2001	158779000000
2002	161045000000
2003	164765000000
2004	187997000000
2005	214231000000
2006	249923000000
2007	271874000000
2008	291340000000
2009	229700000000
2010	298473000000
2011	349433000000
2012	370770000000
2013	380015000000
2014	396914000000
2015	380556000000
2016	373954000000
2017	409433000000
2018	450713000000
2019	460604000000
2020	416999000000