Year	US Dollars adjusted for inflation)
1960	405000000
1961	69000000
1962	181000000
1963	197000000
1964	168000000
1965	117000000
1966	855000000
1967	854000000
1968	1299000000
1969	605000000
1970	629000000
1971	1572000000
1972	569000000
1973	640000000
1974	934000000
1975	636000000
1976	503000000
1977	314000000
1978	370000000
1979	239000000
1980	417000000
1981	261000000
1982	547000000
1983	509000000
1984	283000000
1985	1038000000
1986	1097000000
1987	848000000
1988	853000000
1989	595000000
1990	294000000
1991	197000000
1992	137000000
1993	92000000
1994	34000000
1995	139000000
1996	73000000
1997	9000000
1998	9000000
1999	179000000
2000	18000000
2001	28000000
2002	9000000
2003	8000000
2004	8000000
2005	5000000
2006	5000000
2007	5000000
2008	5000000
2009	4000000
2010	1000000