Year	US Dollars adjusted for inflation)
1967	6000000
1971	3000000
1980	15000000
1981	30000000
1982	30000000
1989	1000000
1990	82000000
1991	3000000
1994	2000000
2000	3000000
2002	9000000
2003	8000000
2004	9000000
2005	24000000
2006	4000000
2008	1000000
2016	1000000
2017	3000000
2018	2000000
2019	1000000
2021	53000000