Year	current US$
1987	759999.990463257
1988	1250000
1989	140000.000596046
1990	270000.010728836
1992	280000.001192093
1993	430000.00715255697
1994	750000
1995	879999.995231628
1996	709999.978542328
1997	189999.99761581398
1998	59999.9986588955
1999	340000.00357627904
2000	50000.0007450581
2001	509999.99046325695
2002	349999.99403953605
2003	-140000.000596046
2004	-9999.99977648258
2005	9999.99977648258
2006	170000.00178813902
2007	-239999.994635582
2008	-239999.994635582
2009	-159999.99642372102
2010	1210000.03814697
2011	1429999.94754791
2012	990000.009536743
2013	579999.983310699
2014	490000.009536743
2015	478540.986776352
2016	857223.391532898
2017	400977.462530136
2018	11793.323792517202
2019	-331258.803606033
2020	-36447.8901028633
2021	-252999.991178513
2022	-218810.006976128