Year	current US$
1960	5000000
1961	6000000
1962	6000000
1963	8000000
1964	6000000
1965	4500000
1966	3819999.9332428
1967	1269999.98092651
1968	-129999.995231628
1970	3000000
1973	3000000
1974	8000000
1975	6000000
1976	6000000
1977	8000000
1978	7000000
1979	9000000
1980	15000000
1981	24000000
1982	28000000
1983	23000000
1984	30000000
1985	39000000
1986	39000000
1987	44000000
1988	26000000
1989	40000000
1990	41000000
1991	19000000
1992	11000000
1993	19000000
1994	1000000
1995	3000000
1996	3000000
1997	4000000
1998	7050000.19073486
1999	44740001.6784668
2000	56590000.1525879
2001	28489999.7711182
2002	24079999.9237061
2003	22700000.762939498
2004	43290000.9155273
2005	15859999.6566772
2006	31790000.915527303
2007	19940000.5340576
2008	25479999.5422363
2009	26239999.7711182
2010	47700000.762939505
2011	73970001.2207031
2012	156880004.882813
2013	226970001.220703
2014	161410003.66210902
2015	196679992.67578098
2016	299440002.441406
2017	439420013.42773396
2018	598669982.910156
2019	638049987.792969
2020	703780029.296875
2021	900570007.324219
2022	982539978.027344