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	0
1988	29999.999329447703
1989	29999.999329447703
1990	49999.998882412896
1991	420000.001788139
1992	749999.9925494189
1993	609999.993816018
1994	1650000.02458692
1995	7540000.159293409
1996	11039999.7569621
1997	7120000.05319715
1998	2919999.98129904
1999	26130000.0622869
2000	23369999.6098876
2001	20560000.4605949
2002	16509999.936446501
2003	7200000.002980229
2004	17339999.8880923
2005	10530000.1148134
2006	39070000.4827231
2007	24120000.3977865
2008	26850000.152364403
2009	58739999.7524917
2010	83769998.8093227
2011	57970000.0211596
2012	41400000.0748783
2013	25519999.5860457
2014	44420000.0688434
2015	19729999.9147654
2016	52449998.4644353
2017	80760000.7113069
2018	57469999.2854148
2019	105079999.64244701
2020	89830001.3244152
2021	68690000.5433708
2022	143100003.40081763