Year	US Dollars adjusted for inflation)
1960	113000000
1961	40000000
1962	571000000
1963	378000000
1964	537000000
1965	920000000
1966	707000000
1967	770000000
1968	450000000
1969	818000000
1970	230000000
1971	313000000
1972	63000000
1973	716000000
1974	898000000
1975	108000000
1976	91000000
1977	278000000
1978	1029000000
1979	192000000
1980	404000000
1981	449000000
1982	129000000
1983	632000000
1984	622000000
1985	511000000
1986	815000000
1987	592000000
1988	743000000
1989	692000000
1990	352000000
1991	213000000
1992	364000000
1993	448000000
1994	262000000
1995	64000000
1996	597000000
1997	35000000
1998	542000000
1999	678000000
2000	326000000
2001	1217000000
2002	643000000
2003	782000000
2004	464000000
2005	463000000
2006	731000000
2007	681000000
2008	444000000
2009	791000000
2010	1525000000
2011	1527000000
2012	819000000
2013	219000000
2014	883000000
2015	1465000000
2016	1026000000
2017	1664000000
2018	1582000000
2019	1186000000
2020	1655000000
2021	1260000000
2022	761000000