Year	current US$
1970	26000000
1971	22065559.39
1972	22799909.59
1973	29803249.36
1974	36079200.74
1975	23000000
1976	51000000
1977	81726402.28
1978	75819999.69
1979	101000000
1980	106000000
1981	160000000
1982	87000000
1983	72000000
1984	78000000
1985	110000000
1986	416000000
1987	625000000
1988	458000000
1989	467000000
1990	495000000
1991	881000000
1992	640500000
1993	467700012.2
1994	968350463.9
1995	815117639.426634
1996	753036298.799701
1997	773519090.521608
1998	805925070.028908
1999	1312052329.0522
2000	1610122976.25762
2001	2056358872.86705
2002	2479942596.14027
2003	3076018646.59598
2004	3189709843.91794
2005	3345610321.40797
2006	3899159914.34258
2007	4460194476.64541
2008	4826851232.37512
2009	4124862554.30564
2010	4030846325.68114
2011	4101315891.06111
2012	4018674668.2006
2013	4449831680.49205
2014	4165731073.41833
2015	5001596492.34082
2016	5191956875.2388
2017	5818773635.08076
2018	6675079294.04126
2019	7116297148.74071
2020	6924526135.55919
2021	8608268970.88542
2022	9454507516.93043
2023	10111593424.102