Year	US Dollars adjusted for inflation)
1964	6000000
1965	15000000
1966	19000000
1967	2000000
1968	2000000
1969	3000000
1970	0
1971	26000000
1972	9000000
1973	2000000
1974	28000000
1975	25000000
1976	17000000
1977	58000000
1978	211000000
1979	56000000
1980	119000000
1981	144000000
1982	91000000
1983	20000000
1984	12000000
1985	6000000
1986	26000000
1987	176000000
1989	47000000
1990	43000000
1991	14000000
1994	30000000
1997	58000000
2000	12000000
2007	11000000
2009	34000000
2010	116000000
2011	13000000
2012	61000000
2013	1000000
2014	17000000
2015	30000000
2016	32000000
2017	16000000
2018	6000000
2019	18000000
2020	71000000
2021	4000000
2022	1000000