Year	current US$
1960	500000
1961	15300000
1962	10200000
1963	12400000
1964	13100000
1965	13700000
1966	10681000
1967	15598000
1968	22402000
1969	27160000
1970	32627000.000000004
1971	42055000
1972	36480000
1973	43980000
1974	34029000
1975	31681000
1976	37883000
1977	41181000
1978	27209000
1979	45942000
1980	62809000
1981	31281000
1982	24042000
1983	70460780.77999999
1984	166995182.4
1985	150967838.9
1986	103992270.8
1987	113557331.7
1988	70487703.83999999
1989	77044634.07000001
1990	122139047.19999999
1991	45883489.35
1992	64698883.190000005
1993	137084309.8
1994	153274280
1995	173463233.6
1996	261914894.10000002
1997	184785070.5
1998	232401538.4
1999	207115770.3
2000	195288444
2001	589023959
2002	240147270
2003	271555129
2004	281219276
2005	296058675
2006	225349268
2007	274290600
2008	377073286
2009	425288051
2010	534034638
2011	389823320
2012	462524743
2013	597900505
2014	968212078
2015	625457446
2016	441556309
2017	750181328
2018	954118241
2019	853123160
2020	1090424763