Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	699999.988079071
1989	2949999.8930841703
1990	19809999.531135
1991	29790000.6566197
1992	34719998.8216162
1993	46910000.2795458
1994	41900000.4399568
1995	34899999.1416931
1996	18839999.5043874
1997	7310000.10296702
1998	24539999.209344402
1999	23609999.969601598
2000	18629999.7717142
2001	9139999.8087436
2002	14350000.0312924
2003	16010000.044480002
2004	23539999.807253502
2005	11369999.8408556
2006	16069999.9090284
2007	31939999.837428298
2008	25119999.5726347
2009	29569999.9276549
2010	25439999.975264102
2011	18250000.378117003
2012	2670000.0166893
2013	8309999.9520927705
2014	2040000.0661611601
2015	-3310000.12159348
2016	-1449999.98435378
2017	-3039999.90411103
2018	-1750000
2019	-1889999.98569489
2020	-2309999.94277954
2021	-3140000.03039837
2022	-829999.983310698