Year	US Dollars adjusted for inflation)
1960	57000000
1961	74000000
1962	42000000
1963	12000000
1964	8000000
1965	140000000
1966	74000000
1967	163000000
1968	265000000
1969	297000000
1970	250000000
1971	332000000
1972	134000000
1973	106000000
1974	137000000
1975	53000000
1976	5000000
1977	7000000
1978	5000000
1995	26000000
2003	2000000
2005	7000000
2007	5000000
2012	15000000
2013	7000000
2014	7000000
2015	7000000
2017	2000000
2018	2000000
2019	5000000
2020	1000000