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	119999.997317791
1991	890000.011771917
1992	1299999.99143183
1993	43280001.6663969
1994	18389999.6839464
1995	31200000.606477298
1996	21569999.3427843
1997	24450000.5282462
1998	-19810000.449419
1999	37089999.6049702
2000	24299999.6244907
2001	33410000.132396802
2002	45839999.8508394
2003	10909999.947994899
2004	15449999.8297542
2005	10530000.1148134
2006	39120000.483468205
2007	24120000.3977865
2008	25740000.1380593
2009	56809999.8049438
2010	81659998.9142269
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