Year	current US$
1974	29999.999329447703
1975	90000.0035762787
1976	439999.997615814
1977	2759999.99046326
1978	1960000.03814697
1979	2910000.08583069
1980	3200000.04768372
1981	3519999.98092651
1982	4409999.84741211
1983	3579999.92370605
1984	4820000.17166138
1985	3150000.09536743
1986	5340000.15258789
1987	9680000.30517578
1988	18350000.3814697
1989	30459999.084472697
1990	26540000.915527303
1991	24149999.6185303
1992	22799999.237060502
1993	9529999.73297119
1994	12550000.1907349
1995	11850000.3814697
1996	10859999.6566772
1997	10060000.4196167
1998	12189999.5803833
1999	14789999.961853001
2000	11600000.3814697
2001	10550000.1907349
2002	11789999.961853001
2003	21989999.7711182
2004	25659999.8474121
2005	24750000
2006	28420000.0762939
2007	32880001.068115197
2008	40240001.6784668
2009	42770000.4577637
2010	47250000
2011	34630001.0681152
2012	39490001.6784668
2013	28879999.1607666
2014	28489999.7711182
2015	26329999.9237061
2016	16690000.534057599
2017	17110000.6103516
2018	13939999.5803833
2019	17459999.084472697
2020	19360000.6103516
2021	17260000.2288818
2022	15350000.3814697