Year	current US$
1976	1000000
1977	2000000
1978	5000000
1979	1000000
1980	2000000
1981	8000000
1982	4000000
1983	2000000
1984	3000000
1985	2000000
1986	3000000
1987	4000000
1988	2000000
1989	3000000
1990	7000000
1991	4000000
1992	4000000
1993	4000000
1994	6000000
1995	6000000
1996	6000000
1997	11000000
1998	10279999.7329712
1999	3859999.89509583
2000	560000.002384186
2001	100000.00149011599
2002	3750000
2003	2369999.8855590797
2004	109999.999403954
2005	1379999.99523163
2006	5539999.96185303
2007	6300000.19073486
2008	670000.016689301
2009	1139999.98569489
2010	6519999.98092651
2011	1730000.01907349
2012	11939999.5803833
2013	8119999.88555908
2014	2750000
2015	3400000.09536743
2016	8689999.5803833
2017	10340000.1525879
2018	3450000.04768372
2019	750000
2020	4920000.07629395
2021	6210000.03814697
2022	4380000.11444092