Year	US Dollars adjusted for inflation)
1960	6000000
1961	4000000
1962	2000000
1963	4000000
1964	2000000
1965	2000000
1966	1000000
1967	14000000
1968	17000000
1969	1000000
1970	2000000
1971	2000000
1972	12000000
1973	16000000
1974	23000000
1975	17000000
1976	16000000
1977	1000000
1978	11000000
1979	52000000
1980	39000000
1981	28000000
1982	2000000
1985	18000000
1986	15000000
1988	56000000
1989	66000000
1991	11000000
1992	25000000
1993	16000000
1994	9000000
1995	2000000
1999	9000000
2000	19000000
2003	5000000
2004	1000000
2005	1000000
2006	9000000
2007	2000000
2008	3000000
2009	5000000
2010	1000000
2011	25000000
2012	12000000
2013	1000000
2014	46000000
2016	27000000
2017	7000000
2018	1000000
2019	34000000
2020	26000000