Year	US Dollars adjusted for inflation)
1960	139000000
1961	335000000
1962	58000000
1963	134000000
1964	482000000
1965	449000000
1966	66000000
1967	72000000
1968	71000000
1969	19000000
1970	312000000
1971	362000000
1972	111000000
1974	39000000
1975	149000000
1976	356000000
1977	368000000
1978	362000000
1979	57000000
1980	483000000
1981	479000000
1982	473000000
1983	231000000
1984	72000000
1985	89000000
1986	16000000
1987	99000000
1988	98000000
1989	187000000
1990	128000000
1991	154000000
1992	72000000
1993	51000000
1994	88000000
1995	134000000
1996	75000000
1997	77000000
1998	116000000
1999	70000000
2000	50000000
2001	146000000
2002	40000000
2003	50000000
2004	232000000
2005	116000000
2006	84000000
2007	133000000
2008	93000000
2009	130000000
2010	17000000
2012	101000000
2013	38000000
2014	165000000
2015	42000000
2016	101000000
2017	52000000
2018	49000000
2019	43000000
2020	62000000
2021	303000000
2022	145000000