Year	US Dollars adjusted for inflation)
1960	5000000
1961	5000000
1962	12000000
1963	111000000
1964	237000000
1965	234000000
1966	319000000
1967	309000000
1968	288000000
1969	323000000
1970	268000000
1971	278000000
1972	276000000
1973	158000000
1974	232000000
1975	299000000
1976	408000000
1977	383000000
1978	319000000
1979	230000000
1980	209000000
1981	348000000
1982	213000000
1983	117000000
1984	91000000
1985	131000000
1986	265000000
1987	222000000
1988	232000000
1989	20000000
1990	105000000
1991	55000000
1992	56000000
1994	133000000
1995	179000000
1996	46000000
1997	21000000
1998	1000000
1999	65000000
2000	47000000
2001	81000000
2002	56000000
2003	83000000
2004	47000000
2005	18000000
2006	282000000
2007	163000000
2008	73000000
2009	75000000
2010	28000000
2011	8000000
2012	27000000
2013	142000000
2014	24000000
2015	2000000
2016	5000000
2017	10000000
2018	24000000
2019	10000000
2020	0
2021	3000000
2022	452000000