Year	US Dollars adjusted for inflation)
1960	5000000
1961	62000000
1962	3000000
1963	29000000
1964	9000000
1965	18000000
1966	32000000
1967	15000000
1968	32000000
1969	121000000
1970	4000000
1971	36000000
1972	167000000
1973	159000000
1974	1000000
1975	287000000
1976	10000000
1977	8000000
1978	12000000
1979	36000000
1980	12000000
1981	28000000
1982	18000000
1983	303000000
1984	662000000
1985	7000000
1986	6000000
1987	4000000
1988	37000000
1989	218000000
1990	13000000
1991	72000000
1992	36000000
1993	68000000
1994	42000000
1995	35000000
1996	49000000
1997	190000000
1998	162000000
1999	44000000
2000	60000000
2001	268000000
2002	170000000
2003	145000000
2004	18000000
2005	18000000
2006	54000000
2007	226000000
2008	109000000
2009	249000000
2010	261000000
2011	145000000
2012	207000000
2013	171000000
2014	167000000
2015	193000000
2016	18000000
2017	91000000
2018	16000000
2019	22000000
2020	77000000
2021	44000000
2022	44000000