Year	current US$
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	39999.9991059303
1988	29999.999329447703
1989	49999.998882412896
1990	169999.996200204
1991	1570000.0096112501
1992	1619999.99545515
1993	43540001.6661733
1994	17429999.651387297
1995	24310000.449419
1996	11319999.5793402
1997	18540000.4666299
1998	-22230000.4381686
1999	11349999.5339662
2000	9360000.16704202
2001	23729999.700561203
2002	31339999.9048561
2003	4699999.9415129395
2004	239999.921992421
2005	2079999.9628216003
2006	1330000.00193715
2007	3719999.94851649
2008	-690000.01065433
2009	-2089999.95142221
2010	-29999.8261034489
2011	479999.985545874
2012	280000.040307641
2013	-179999.97921288
2014	-330000.011250377
2015	179999.992251396
2016	-100000.031292439
2017	90000.007301569
2018	-740000.009536743
2019	-629999.980330467
2020	980000.004172325
2021	-100000.023841858
2022	-40000.021457671886