Year	current US$
1971	19999.9995529652
1972	39999.9991059303
1973	19999.9995529652
1975	29999.999329447703
1977	189999.99761581398
1978	4829999.92370605
1979	12710000.038146999
1980	4420000.07629395
1981	4010000.2288818406
1982	3109999.89509583
1983	3809999.94277954
1984	1879999.99523163
1985	2339999.91416931
1986	5099999.90463257
1987	6150000.09536743
1988	5190000.05722046
1989	11470000.2670288
1990	8300000.19073486
1991	14750000
1992	5119999.88555908
1993	9449999.80926514
1994	14100000.3814697
1995	12659999.8474121
1996	11010000.2288818
1997	16430000.3051758
1998	23440000.5340576
1999	9760000.22888184
2000	12710000.038146999
2001	8819999.69482422
2002	9239999.77111816
2003	14920000.076293899
2004	30360000.6103516
2005	52990001.6784668
2006	44240001.6784668
2007	39459999.0844727
2008	48590000.1525879
2009	59540000.9155273
2010	90919998.1689453
2011	88529998.7792969
2012	100150001.52587901
2013	48759998.3215332
2014	108279998.77929701
2015	69620002.746582
2016	48569999.6948242
2017	44540000.9155273
2018	34750000
2019	38029998.779296905
2020	38119998.9318848
2021	36130001.0681152
2022	28969999.3133545