Year	current US$
1981	709999.978542328
1982	1190000.0572204601
1983	9999.99977648258
1984	4730000.01907349
1985	5139999.8664856
1986	4940000.05722046
1987	7130000.11444092
1988	1799999.95231628
1989	-689999.997615814
1990	4329999.92370605
1991	980000.019073486
1992	-1519999.98092651
1993	1360000.01430511
1994	360000.01430511504
1995	-639999.985694885
1996	829999.983310699
1997	-1070000.05245209
1998	-1019999.98092651
1999	-409999.99642372096
2000	-2240000.00953674
2001	1799999.95231628
2002	-740000.009536743
2003	-540000.021457672
2004	-1960000.03814697
2005	629999.995231628
2006	3630000.1144409203
2007	2329999.92370605
2008	1750000
2009	270000.010728836
2010	-730000.019073486
2011	-1519999.98092651
2012	1840000.0333786
2013	349999.99403953605
2014	-70000.0002980232
2015	4529646.87347412
2016	3417799.9496460003
2017	768209.993839264
2018	5209539.89028931
2019	6997640.13290405
2020	3930680.0365448