Year	US Dollars adjusted for inflation)
1960	6000000
1961	17000000
1962	14000000
1963	27000000
1964	18000000
1965	19000000
1966	3000000
1967	13000000
1968	6000000
1969	22000000
1970	4000000
1971	23000000
1972	4000000
1975	53000000
1976	10000000
1977	9000000
1978	25000000
1979	19000000
1980	40000000
1982	38000000
1986	8000000
1989	34000000
1990	271000000
1991	232000000
1992	29000000
1993	331000000
1994	97000000
1995	223000000
1996	118000000
1997	231000000
1998	156000000
1999	141000000
2000	16000000
2001	154000000
2002	157000000
2003	100000000
2004	194000000
2005	160000000
2006	175000000
2007	153000000
2008	80000000
2009	62000000
2010	59000000
2011	668000000
2012	395000000
2013	250000000
2014	104000000
2015	246000000
2016	283000000
2017	211000000
2018	192000000
2019	196000000
2020	216000000
2021	64000000
2022	394000000