Year	current US$
1981	469999.998807907
1982	2730000.01907349
1983	3589999.91416931
1984	3509999.99046326
1985	12079999.923706101
1986	13229999.5422363
1987	15550000.1907349
1988	10779999.7329712
1989	10090000.1525879
1990	8640000.34332275
1991	4389999.8664856
1992	-2269999.98092651
1993	419999.986886978
1994	-970000.028610229
1995	-29999.999329447703
1996	1620000.00476837
1997	1669999.95708466
1998	-3829999.92370605
1999	-3829999.92370605
2000	-6809999.94277954
2001	6670000.07629395
2002	-2779999.97138977
2003	-1090000.0333786
2004	-2230000.01907349
2005	-4559999.94277954
2006	-1440000.0572204601
2007	1700000.04768372
2008	720000.028610229
2009	-1519999.98092651
2010	6849999.90463257
2011	38209999.0844727
2012	9609999.65667725
2013	16280000.6866455
2014	8640000.34332275
2015	11928009.0332031
2016	16657609.939575199
2017	11153129.5776367
2018	-172730.56507110602
2019	-238064.57221508
2020	12859000.2059937
2021	-6906000.1373291
2022	-6203040.12298584