Year	current US$
1962	7900000
1963	10100000
1964	10450000
1965	9850000
1966	7770000
1967	8800000
1968	7420000
1969	3570000
1970	3180000
1971	7504576.30064012
1972	13459437.6018234
1973	42243163.0419726
1974	103811969.247284
1975	47725239.4020571
1976	81982579.4999275
1977	50016680.43428
1978	79498929.1030237
1979	113673011.818673
1980	139900000
1981	161803629.212123
1982	139111031.074549
1983	105932869.183618
1984	77529406.287093
1985	59216783.831283
1986	48219151.5907673
1987	71808358.7510108
1988	55567284.7896005
1989	82418274.7654217
1990	54110914.6263391
1991	67614434.4791086
1992	61182500.3093762
1993	44559476.5223351
1994	39673889.0472013
1995	85456192.101414
1996	141217938.777623
1997	200751636.371487
1998	48755773.6812578
1999	35280000
2000	46246077.9554015
2001	36653570.3715736
2002	70141786.0217224
2003	27022883.3001082
2004	33727016.7291556
2005	64468252.9793491
2006	187185036.06378
2007	197825712.520998
2008	188595949.427061
2009	225351721.083112
2010	271688466.196257
2011	484718210.555567
2012	949499710.793157
2013	984050730.460926
2014	621518343.480939
2015	810079358.346095
2016	835289254.487379
2017	858912970.854327
2018	919552858.830821
2019	1028702420.51919
2020	1493184646.02741
2021	2038562789.40175