Year	current US$
1960	111670000
1961	26590000
1962	34000000
1963	81000000
1964	100000000
1965	155450000
1966	149500000
1967	120000000
1968	99000000
1969	76000000
1970	195000000
1971	309000000
1972	479798925.165625
1973	992783400.72234
1974	1458926734.9453
1975	1314498770.84065
1976	1596800908.5706
1977	1479358923.30713
1978	1763040569.08341
1979	2249697356.15879
1980	2846140295.38574
1981	2198943804.27165
1982	887757768.637285
1983	746931790.819172
1984	602083004.173814
1985	614894551.845343
1986	1728184592.61434
1987	968271035.196981
1988	1003387937.18292
1989	1416962046.94194
1990	924351453.24437
1991	3245949362.74299
1992	4403257950.96732
1993	4675688643.55181
1994	6038007451.96736
1995	6396309730.47056
1996	10058229068.0325
1997	7297478735.0503
1998	9274146439.95128
1999	13269721427.4675
2000	13090218236.0191
2001	13476292198.9252
2002	13329278364.983
2003	13654873163.0659
2004	13116283945.6323
2005	15925983270.4456
2006	20025418616.7326
2007	30210597101.7617
2008	33192893594.3423
2009	38782892837.3944
2010	55362821444.5526
2011	67289681787.1415
2012	73478389940.6134
2013	75688607378.4748
2014	72056986769.774
2015	73963945253.147
2016	73432698663.632
2017	73228467060.8398
2018	71039872169.4545
2019	79823656328.1172
2020	98512083712.2355
2021	99461671283.8454
2022	86850194729.2526
2023	93196024815.594