Year	current US$
1964	19999.9995529652
1965	159999.99642372102
1966	330000.013113022
1967	689999.997615814
1968	1639999.98569489
1969	3420000.07629395
1970	2549999.95231628
1971	2980000.01907349
1972	3730000.01907349
1973	4260000.228881841
1974	5949999.80926514
1975	9260000.22888184
1976	8850000.38146973
1977	12569999.6948242
1978	13170000.076293899
1979	19219999.3133545
1980	21049999.237060502
1981	20569999.6948242
1982	23680000.3051758
1983	22229999.5422363
1984	20549999.237060502
1985	21120000.8392334
1986	31680000.3051758
1987	30180000.3051758
1988	31340000.1525879
1989	27149999.6185303
1990	22500000
1991	5199999.80926514
1992	2599999.90463257
1993	2329999.92370605
1994	2849999.90463257
1995	2230000.01907349
1996	2660000.08583069
1997	2809999.94277954
1998	2539999.96185303
1999	1980000.01907349
2000	2890000.10490417
2001	4039999.96185303
2002	2960000.03814697
2003	10270000.4577637
2004	7940000.05722046
2005	9850000.38146973
2006	12340000.1525879
2007	13020000.4577637
2008	21280000.6866455
2009	15520000.4577637
2010	13369999.8855591
2011	19739999.7711182
2012	14470000.2670288
2013	23520000.4577637
2014	16799999.237060502
2015	13869999.8855591
2016	10300000.1907349
2017	11829999.923706101
2018	14630000.1144409
2019	13029999.7329712
2020	9779999.73297119
2021	10710000.038146999
2022	11739999.7711182