Year	current US$
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	0
1988	0
1989	0
1990	0
1991	280000.001192093
1992	650000.013411045
1993	2410000.0001490097
1994	1049999.9821186098
1995	5189999.93242323
1996	7559999.84405935
1997	3029999.95276332
1998	2729999.9371171
1999	8180000.072345139
2000	3880000.0455230502
2001	3339999.97936189
2002	5349999.96051192
2003	4859999.92117286
2004	5020000.01445413
2005	5770000.06474555
2006	6280000.03285706
2007	6850000.05550683
2008	9210000.02883375
2009	6609999.85598028
2010	1280000.0049173802
2011	1449999.9880790699
2012	910000.007599592
2013	2080000.03360212
2014	1689999.98643994
2015	1460000.01765788
2016	7060000.18492341
2017	15090000.3593415
2018	7839999.84152615
2019	6759999.95134771
2020	6590000.18984079
2021	4750000.07264316
2022	64789998.665452