Year	US Dollars adjusted for inflation)
1960	5000000
1961	2000000
1962	31000000
1963	75000000
1964	97000000
1965	10000000
1966	58000000
1967	128000000
1968	91000000
1969	79000000
1970	25000000
1971	195000000
1972	112000000
1973	229000000
1974	74000000
1975	85000000
1976	394000000
1977	146000000
1978	72000000
1979	310000000
1980	127000000
1981	56000000
1982	25000000
1983	275000000
1984	543000000
1985	405000000
1986	141000000
1987	5000000
1988	14000000
1989	38000000
1991	33000000
1992	13000000
1993	13000000
1994	308000000
1995	843000000
1996	33000000
1997	553000000
1998	39000000
1999	720000000
2000	25000000
2001	26000000
2002	153000000
2003	196000000
2004	73000000
2005	59000000
2006	184000000
2007	502000000
2008	500000000
2009	1291000000
2010	213000000
2011	5000000
2012	17000000
2013	77000000
2014	73000000
2015	118000000
2016	272000000
2017	196000000
2018	93000000
2019	68000000
2020	57000000
2021	133000000
2022	71000000