Year	current US$
1972	1580000.04291534
1973	2099999.90463257
1974	3609999.89509583
1975	4530000.20980835
1976	6340000.15258789
1977	699999.988079071
1978	2890000.10490417
1979	6199999.80926514
1980	6449999.80926514
1981	17229999.5422363
1982	1970000.02861023
1983	5050000.19073486
1984	2910000.08583069
1985	3359999.89509583
1986	8829999.92370605
1987	7130000.11444092
1988	12619999.8855591
1989	1269999.98092651
1990	10949999.8092651
1991	2180000.0667572
1992	9180000.30517578
1993	1429999.94754791
1994	-170000.00178813902
1995	899999.976158142
1996	-1580000.04291534
1997	1559999.9427795399
1998	389999.98569488496
1999	-730000.019073486
2000	200000.00298023198
2001	759999.990463257
2002	-2519999.98092651
2003	-1320000.05245209
2004	4659999.84741211
2005	8260000.22888184
2006	-699999.988079071
2007	6539999.96185303
2008	19610000.6103516
2009	12689999.5803833
2010	45130001.0681152
2011	11539999.961853001
2012	18420000.0762939
2013	13670000.076293899
2014	10420000.076293899
2015	6300000.19073486
2016	-5739999.771118159
2017	1669999.95708466
2018	5489999.771118159
2019	34770000.4577637
2020	1769999.98092651
2021	13850000.3814697
2022	25969999.3133545