Year	US Dollars adjusted for inflation)
1960	10000000
1961	2000000
1962	0
1963	11000000
1965	30000000
1966	52000000
1967	72000000
1968	4000000
1969	1000000
1972	21000000
1973	165000000
1974	283000000
1975	128000000
1976	180000000
1977	44000000
1978	57000000
1979	48000000
1980	122000000
1981	97000000
1982	61000000
1983	23000000
1984	15000000
1985	42000000
1986	15000000
1990	16000000
1999	1000000
2013	3000000
2015	1000000
2016	2000000
2017	2000000
2019	8000000
2020	2000000
2021	2000000