Year	current US$
1980	4139999.8664856004
1981	3630000.1144409203
1982	7840000.15258789
1983	4909999.84741211
1984	-1309999.9427795399
1985	920000.016689301
1986	1080000.04291534
1987	2529999.97138977
1988	-2170000.07629395
1989	-829999.983310699
1990	5780000.20980835
1991	3970000.02861023
1992	-1399999.97615814
1993	2470000.02861023
1994	-1279999.97138977
1995	1460000.03814697
1996	-2619999.8855590797
1997	-1330000.04291534
1998	-589999.973773956
1999	519999.980926514
2000	1789999.96185303
2001	-500000
2002	-189999.99761581398
2003	-2460000.03814697
2004	-59999.9986588955
2005	2450000.04768372
2006	-1600000.02384186
2007	-3920000.07629395
2008	5420000.07629395
2009	-1500000
2010	-1620000.00476837
2011	5460000.03814697
2012	170000.00178813902
2013	860000.014305115
2014	-1779999.97138977
2015	3868944.88334656
2016	-2594996.9291687
2017	1562402.12917328
2018	5425924.30114746
2019	2095294.95239258
2020	4494693.75610352
2021	-1631000.04196167
2022	-772740.006446838