Year	US Dollars adjusted for inflation)
1960	191000000
1961	96000000
1962	14000000
1963	24000000
1964	18000000
1965	52000000
1966	65000000
1967	26000000
1968	188000000
1969	89000000
1970	35000000
1971	157000000
1972	184000000
1973	458000000
1974	555000000
1975	548000000
1976	372000000
1977	933000000
1978	748000000
1979	639000000
1980	697000000
1981	858000000
1982	271000000
1983	317000000
1984	356000000
1985	213000000
1986	250000000
1987	614000000
1988	240000000
1989	10000000
1990	97000000
1991	107000000
1992	124000000
1993	42000000
1994	175000000
1995	46000000
1996	119000000
1997	373000000
1998	51000000
1999	96000000
2000	18000000
2001	10000000
2002	16000000
2003	22000000
2004	47000000
2005	368000000
2006	193000000
2007	172000000
2009	43000000
2010	46000000
2011	68000000
2012	5000000
2013	15000000
2014	149000000
2015	201000000
2016	202000000
2017	64000000
2018	103000000
2019	0
2020	28000000
2021	97000000
2022	26000000