Year	current US$
1975	140000.000596046
1976	1620000.00476837
1977	2019999.9809265102
1978	5619999.88555908
1979	579999.983310699
1980	949999.988079071
1981	3160000.08583069
1982	1620000.00476837
1983	2539999.96185303
1984	8729999.54223633
1985	7170000.07629395
1986	9810000.4196167
1987	8329999.923706049
1988	21379999.1607666
1989	19559999.4659424
1990	53900001.5258789
1991	56759998.3215332
1992	60830001.8310547
1993	45569999.6948242
1994	56479999.5422363
1995	71410003.6621094
1996	94309997.55859381
1997	70239997.8637695
1998	65400001.525878906
1999	52950000.762939505
2000	36849998.4741211
2001	60459999.0844727
2002	62380001.0681152
2003	67629997.253418
2004	76680000.3051758
2005	70290000.9155273
2006	48580001.8310547
2007	64860000.61035161
2008	49389999.3896484
2009	38900001.5258789
2010	24389999.3896484
2011	28100000.3814697
2012	26510000.2288818
2013	33159999.847412102
2014	62119998.9318848
2015	26899999.6185303
2016	43279998.779296905
2017	39790000.9155273
2018	35430000.3051758
2019	40150001.5258789
2020	33330001.831054702
2021	51790000.9155273
2022	24309999.4659424