Year	current US$
1981	1000000
1982	1000000
1983	1000000
1984	4000000
1985	11000000
1986	26000000
1987	13000000
1988	9000000
1989	8000000
1990	4000000
1991	5000000
1992	12000000
1993	20000000
1994	70000000
1995	1000000
1996	4000000
1997	12000000
1998	10289999.961853001
1999	-1289999.96185303
2000	-3000000
2001	-4039999.96185303
2002	-4869999.88555908
2003	-5639999.8664856
2004	-4989999.771118159
2005	-1440000.0572204601
2006	-17120000.8392334
2007	7269999.98092651
2008	1429999.94754791
2009	5250000
2010	3019999.98092651