Year	current US$
1983	50000.0007450581
1984	340000.00357627904
1985	759999.990463257
1986	430000.00715255697
1987	720000.028610229
1988	-389999.98569488496
1991	70000.0002980232
1992	-449999.988079071
1993	949999.988079071
1994	-289999.99165535
1995	-310000.002384186
1996	-300000.011920929
1997	-280000.001192093
1998	-280000.001192093
1999	-280000.001192093
2000	-270000.010728836
2002	-129999.995231628
2012	600000.023841858
2014	-239999.994635582
2015	192647.993564606
2016	456094.354391098
2017	153524.48821067798
2018	-8334.1421559453
2019	-32999.9998211861
2020	-37250.000983476595