Year	US Dollars adjusted for inflation)
1960	27000000
1961	33000000
1967	8000000
1969	13000000
1970	2000000
1971	7000000
1972	22000000
1973	1000000
1974	2000000
1975	28000000
1976	19000000
1977	0
1980	49000000
1981	49000000
1982	1000000
1985	25000000
1986	25000000
1987	28000000
1988	25000000
1989	0
1991	54000000
1992	75000000
1993	54000000
1994	13000000
1995	17000000
1996	31000000
1997	7000000
1998	22000000
1999	28000000
2000	20000000
2001	37000000
2002	22000000
2003	47000000
2004	72000000
2005	35000000
2006	199000000
2007	137000000
2008	141000000
2009	107000000
2010	243000000
2011	74000000
2012	193000000
2013	111000000
2014	63000000
2015	67000000
2016	82000000
2017	96000000
2018	90000000
2019	109000000
2020	111000000
2021	89000000
2022	48000000