Year	US Dollars adjusted for inflation)
1964	18000000
1965	22000000
1973	9000000
1982	5000000
1983	19000000
1984	24000000
1985	33000000
1986	40000000
1987	34000000
1988	124000000
1989	28000000
1990	70000000
1991	83000000
1992	26000000
1993	10000000
1994	39000000
1995	33000000
1996	170000000
1997	98000000
1998	7000000
1999	113000000
2000	4000000
2001	180000000
2002	66000000
2003	6000000
2004	16000000
2005	18000000
2006	20000000
2007	17000000
2010	44000000
2011	41000000
2012	6000000
2017	30000000
2019	19000000
2020	30000000
2021	11000000