Year	US Dollars adjusted for inflation)
1971	6000000
1972	9000000
1973	9000000
1974	1000000
1978	27000000
1979	44000000
1980	48000000
1981	30000000
1982	91000000
1983	101000000
1984	173000000
1985	99000000
1986	28000000
1987	35000000
1988	52000000
1989	25000000
1990	7000000
1991	5000000
1992	14000000
1993	16000000
1994	29000000
1995	9000000
1996	4000000
1997	11000000
1998	2000000
1999	19000000
2000	3000000
2003	24000000
2005	3000000
2006	8000000
2007	32000000
2009	2000000
2010	1000000
2011	0
2013	216000000