Year	US Dollars adjusted for inflation)
1964	7000000
1965	16000000
1966	17000000
1969	7000000
1970	4000000
1971	165000000
1972	29000000
1973	19000000
1974	9000000
1975	48000000
1976	109000000
1977	40000000
1978	42000000
1979	4000000
1980	136000000
1981	252000000
1982	42000000
1984	18000000
1996	6000000
2000	43000000
2002	2000000
2005	0
2006	28000000
2007	4000000
2008	2000000
2011	1000000
2012	61000000
2015	14000000
2016	44000000
2017	46000000
2019	43000000
2020	3000000
2021	19000000
2022	2000000