Year	current US$
1990	-29218886.8597411
1991	-55854565.0274318
1992	-50973267.7881409
1993	-42468072.6284646
1994	-47970732.1213288
1995	-63691147.9111986
1996	-69567576.2863304
1997	-42667665.6786633
2001	-69588664.312697
2002	-59768788.3675123
2003	-90897288.8342998
2004	-73442992.5601335
2005	-107071119.259584
2006	-101778532.501187
2007	-110754374.205972
2008	-127455408.147661
2009	-172154521.038538
2010	-221953786.682558
2011	-110028216.395114
2012	-227120137.098428
2013	-251954155.286091
2014	-154518001.860931
2015	-176813802.415238
2016	-206975485.51322
2017	-183947409.371601
2018	-40634745.4565091
2019	-65810477.1920976
2020	-53782131.703086