Year	current US$
1960	49900000
1961	53400000
1962	58900000
1963	70100000
1964	69600000
1965	69500000
1966	71600000
1967	66407000
1968	71817000
1969	81884000
1970	84591000
1971	99900000
1972	124419000
1973	159016000
1974	230550000
1975	224861000
1976	297146000
1977	313137000
1978	269156000
1979	435015000
1980	670474000
1981	638117000
1982	200898367.9
1983	195405822.6
1984	175982593
1985	203069731.60000002
1986	166305851.9
1987	336183450.90000004
1988	175081535.9
1989	174740024.1
1990	131088402.30000001
1991	189029326.70000002
1992	181319022.5
1993	688112731.5999999
1994	104603806.89999999
1995	165993816.39999998
1996	128046649.69999999
1997	144654658.89999998
1998	151181189.3
1999	122752138.3
2000	255638304
2001	152686740
2002	155922548
2003	624258663
2004	316300926
2005	509191749
2006	404162839
2007	479663817
2008	540065589
2009	403441027
2010	388483652
2011	375846232
2012	305795131
2013	373958204
2014	414759211
2015	571404993
2016	502088950
2017	403941915
2018	875181037
2019	863833322
2020	776722236