Year	US Dollars adjusted for inflation)
1964	5000000
1965	10000000
1966	14000000
1967	13000000
1968	23000000
1969	28000000
1970	9000000
1971	21000000
1972	31000000
1973	12000000
1974	45000000
1975	109000000
1976	54000000
1977	195000000
1978	204000000
1979	184000000
1980	264000000
1981	215000000
1982	254000000
1983	409000000
1984	281000000
1985	207000000
1986	347000000
1987	142000000
1988	75000000
1989	209000000
1990	86000000
1991	141000000
1992	300000000
1993	346000000
1994	296000000
1995	154000000
1996	282000000
1997	231000000
1998	215000000
1999	166000000
2000	371000000
2001	441000000
2002	457000000
2003	376000000
2004	579000000
2005	476000000
2006	391000000
2007	558000000
2008	375000000
2009	746000000
2010	644000000
2011	548000000
2012	462000000
2013	410000000
2014	386000000
2015	562000000
2016	1226000000
2017	1187000000
2018	1122000000
2019	348000000
2020	381000000
2021	543000000
2022	831000000