Year	current US$
1964	49634967.32026145
1965	44677871.14845938
1966	50420168.06722689
1967	18784530.38674033
1968	28551380.552220874
1969	89405762.30492197
1970	82483193.27731092
1971	59447773.7665463
1972	67002247.19101123
1973	157211519.6078431
1974	165431578.9473684
1975	81896681.41592918
1976	61836208.44564236
1977	79514136.1256544
1978	200402101.2416429
1979	186637464.52223268
1980	9428571.42857143
1981	26402070.75064711
1982	41485068.60371267
1983	32997347.4801061
1984	118804780.87649402
1985	3415802.905378804
1986	71600807.85483472
1987	125165220.45648146
1988	213384991.08076525
1989	135957066.18962434
1990	88969005.45408925
1991	102675245.51303759
1992	47967561.07328794
1993	26229074.889867842
1994	114239134.14010578
1995	-19858315.677966103
1996	-34561746.497230366
1997	-36592969.94396332
1998	-12751982.604246685
1999	-38410930.05210065
2000	-128217102.4329621
2001	-97144799.11388582
2002	-120878989.99523582
2003	-95368627.28395587
2004	-34023099.98889424
2005	-7906836.545555976
2006	37065622.205138646
2007	6942280.983496506
2008	-77252671.87989998
2009	-113831228.86299528
2010	345493047.2862961
2011	69581312.44593787
2012	311569097.69205475
2013	-808804572.1418515
2014	-400036979.25669265
2015	-529397261.62332547
2016	-347860567.8273561
2017	-150627157.2410715
2018	-283215358.45334226
2019	-292076220.9939135
2020	-376832706.8959922
2021	-568023689.0441763
2022	-515886998.89305323
2023	-574093954.3940073