Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	709999.978542328
1989	1869999.95261431
1990	309999.99679625
1991	1579999.97958541
1992	1320000.0077486
1993	2540000.02145767
1994	479999.989271164
1995	11359999.522566801
1996	12790000.0307709
1997	7239999.8921901
1998	26810000.65431
1999	89899999.35589729
2000	78919997.5822121
2001	81670001.2460351
2002	136509996.35458001
2003	140469999.654219
2004	108189997.92635399
2005	47650000.821798995
2006	146199996.722862
2007	121699998.406693
2008	185179999.936372
2009	209719997.614622
2010	97669998.2769787
2011	39290001.662448
2012	-5820000.084117049
2013	-13369999.9209493
2014	-15049999.9430031
2015	-31189999.941736497
2016	25589999.8117238
2017	56449997.4828213
2018	26169999.9663979
2019	21009999.9327213
2020	-1130000.44971704
2021	-26989999.5736778
2022	80230003.07194895