Year	current US$
1980	13109999.731183061
1981	6439999.915659428
1982	8030000.019818541
1983	19660000.02063811
1984	14940000.224858526
1985	28839999.62545932
1986	36130000.08463857
1987	49519999.60839748
1988	5019999.798387292
1989	8950000.256299973
1990	27300000.235438343
1991	2789999.8128414163
1992	-7189999.813213932
1993	5769999.818876387
1994	6779999.833554033
1995	4140000.0005960395
1996	6049999.963492153
1997	14819999.720901264
1998	-12769999.84681607
1999	16519999.941810966
2000	16249999.973922968
2001	28590000.551193945
2002	16970000.246539664
2003	8869999.364018453
2004	-2439999.9529123288
2005	4399999.981746083
2006	17950000.248849392
2007	24629999.87229706
2008	36950000.08493662
2009	9710000.20951036
2010	17660000.16778709
2011	21249999.612569798
2012	22080000.486224905
2013	20159999.640658505
2014	29159999.828785654
2015	19890352.576971054
2016	35368925.619870424
2017	26951935.48500539
2018	36529565.14433029
2019	27248436.540365215
2020	-764844.4734513646
2021	-271000.1990199208
2022	5265770.193189375