Year	current US$
1984	20000000
1985	24000000
1986	11000000
1987	3000000
1998	140000.000596046
1999	109999.999403954
2000	340000.00357627904
2001	189999.99761581398
2002	19999.9995529652
2003	9999.99977648258
2004	370000.00476837205
2005	7110000.1335144
2006	1750000
2007	129999.995231628
2008	50000.0007450581
2009	79999.9982118607
2010	19999.9995529652
2011	19999.9995529652
2013	500000
2015	0
2016	500000
2017	-39999.9991059303
2018	0
2019	9999.99977648258