Year	current US$
1960	16000000
1961	15000000
1962	9000000
1963	10000000
1964	11000000
1965	10939999.5803833
1966	8010000.22888184
1967	12390000.3433228
1968	14079999.923706101
1969	11000000
1970	12000000
1971	10000000
1972	16000000
1973	15000000
1974	18000000
1975	23000000
1976	29000000
1977	26000000
1978	13000000
1979	19000000
1980	17000000
1981	18000000
1982	20000000
1983	36000000
1984	29000000
1985	50000000
1986	86000000
1987	155000000
1988	134000000
1989	146000000
1990	88000000
1991	75000000
1992	106000000
1993	72000000
1994	54000000
1995	37000000
1996	-1000000
1997	35000000
1998	33049999.2370605
1999	51750000
2000	57959999.0844727
2001	63599998.4741211
2002	64730003.356933594
2003	67940002.44140631
2004	53540000.9155273
2005	38360000.6103516
2006	67250000
2007	45709999.0844727
2008	70349998.4741211
2009	83889999.3896484
2010	100500000
2011	93080001.8310547
2012	95489997.8637695
2013	102669998.168945
2014	126040000.915527
2015	123500000
2016	133419998.168945
2017	209679992.67578098
2018	199710006.71386698
2019	183479995.727539
2020	149699996.94824198
2021	252410003.66210902
2022	222339996.33789098