Year	current US$
1981	1320000.05245209
1982	189999.99761581398
1983	3920000.07629395
1984	1740000.0095367401
1985	1200000.04768372
1986	839999.973773956
1987	1370000.00476837
1988	239999.994635582
1989	-119999.997317791
1990	879999.995231628
1992	230000.004172325
1993	0
1994	0
1995	-4219999.79019165
1996	6019999.98092651
1997	250000
1998	3779999.97138977
1999	7519999.98092651
2000	2309999.94277954
2002	1080000.04291534
2003	589999.973773956
2004	1820000.05245209
2005	2150000.09536743
2006	3940000.05722046
2007	2599999.90463257
2008	1590000.0333786
2009	4019999.98092651
2010	2930000.0667572
2011	1690000.0572204601
2012	769999.9809265097
2013	1200000.04768372
2014	-14880000.054836227
2015	-601822.9909241203
2016	-297360.897064212
2017	3225172.40047455
2018	3568226.9968092395
2019	5555800.91476441
2020	4912752.8667449895
2021	-1655999.973416327
2022	-2865680.0463795695