Year	current US$
1981	349999.99403953605
1982	490000.009536743
1983	2480000.01907349
1984	2509999.99046326
1985	2049999.9523162802
1986	1840000.0333786
1987	2740000.00953674
1988	259999.990463257
1990	1090000.0333786
1992	-209999.993443489
1993	-759999.990463257
1994	-219999.998807907
1995	-200000.00298023198
1996	810000.002384186
1997	709999.978542328
1998	1879999.99523163
1999	3599999.90463257
2000	7119999.88555908
2001	8590000.15258789
2002	12539999.961853001
2003	8899999.61853027
2004	2910000.08583069
2005	2440000.05722046
2006	1470000.02861023
2007	7000000
2008	6070000.17166138
2009	1950000.04768372
2010	-2230000.01907349
2011	-1009999.99046326
2012	-689999.997615814
2013	1389999.98569489
2014	-1779999.97138977
2015	-1278980.01670837
2016	1142267.22717285
2017	-294136.703014374
2018	720589.995384216
2019	776921.510696411
2020	106769.80018615701
2021	-834999.978542328
2022	-1416939.97383118