Year	current US$
1987	500000
1989	1539999.96185303
1990	469999.998807907
1991	509999.99046325695
1992	-39999.9991059303
1993	330000.013113022
1994	519999.980926514
1995	90000.0035762787
1996	-19999.9995529652
1997	150000.005960464
1998	-439999.997615814
1999	370000.00476837205
2000	-310000.002384186
2001	509999.99046325695
2002	119999.997317791
2003	349999.99403953605
2004	589999.973773956
2005	959999.978542328
2006	1460000.03814697
2007	4219999.79019165
2008	-39999.9991059303
2009	0
2010	180000.00715255702
2011	79999.9982118607
2012	370000.00476837205
2013	839999.973773956
2014	970000.028610229
2015	401600.986719131
2016	-220924.004912376
2017	-314624.488353729
2018	707009.971141815
2019	-193259.343504906
2020	-237887.874245644
2021	-365000.009536743
2022	2064280.03311157