Year	current US$
1979	0
1980	4139999.8664856004
1981	4770000.09641051
1982	13350000.083446499
1983	18529999.554157298
1984	15020000.2789497
1985	29550000.399351098
1986	34039999.2391467
1987	30569999.6352196
1988	1179999.78363514
1989	11779999.762773499
1990	25910000.592470203
1991	7510000.10967255
1992	8469999.74921346
1993	13049999.980256
1994	650000.0674277539
1995	3200000.08493662
1996	6740000.06914139
1997	3370000.0047683697
1998	3890000.54821372
1999	11339999.85829
2000	16419999.722391399
2001	3399999.8867511703
2002	4639999.9782443
2003	4850000.02197921
2004	3249999.99627471
2005	14340000.0855327
2006	1339999.82476234
2007	11800000.0417233
2008	24149999.782443002
2009	6539999.6638298
2010	5800000.25033951
2011	7480000.28729439
2012	7809999.49574471
2013	4489999.86052513
2014	4770000.04053116
2015	9262921.921908861
2016	10504115.7454252
2017	27645430.296659503
2018	26150022.804737102
2019	14063385.8293295
2020	7584405.88414669
2021	-10373000.398278201
2022	-9789799.712598301