Year	US Dollars adjusted for inflation)
1960	2000000
1961	12000000
1969	18000000
1971	0
1974	32000000
1975	58000000
1976	104000000
1977	144000000
1978	183000000
1979	73000000
1980	159000000
1981	68000000
1982	123000000
1983	200000000
1984	275000000
1985	207000000
1986	138000000
1987	216000000
1988	206000000
1989	53000000
1990	106000000
1991	127000000
1992	98000000
1993	40000000
1994	54000000
1995	38000000
1996	27000000
1997	27000000
1998	18000000
2002	20000000
2004	46000000
2005	1000000
2006	44000000
2007	53000000
2008	92000000
2009	43000000
2010	143000000
2011	31000000
2012	33000000
2013	30000000
2014	30000000
2015	51000000
2016	121000000
2017	36000000
2018	100000000
2019	10000000
2020	162000000
2021	84000000
2022	6000000