Year	US Dollars adjusted for inflation)
1960	24000000
1961	4000000
1962	21000000
1963	27000000
1964	4000000
1965	14000000
1966	99000000
1967	31000000
1968	34000000
1969	24000000
1970	89000000
1971	54000000
1972	53000000
1973	5000000
1974	16000000
1975	58000000
1976	135000000
1977	1107000000
1978	965000000
1979	113000000
1980	330000000
1981	328000000
1982	516000000
1983	353000000
1984	273000000
1985	247000000
1986	348000000
1987	239000000
1988	155000000
1989	47000000
1990	2000000
1991	80000000
1997	69000000
1998	211000000
1999	155000000
2000	117000000
2002	20000000
2003	174000000
2004	239000000
2010	54000000
2011	76000000
2012	193000000
2013	154000000
2014	33000000
2015	10000000
2016	55000000
2017	51000000
2018	12000000
2019	74000000
2020	24000000
2021	11000000
2022	35000000