Year	US Dollars adjusted for inflation)
1974	21000000
1975	10000000
1976	12000000
1978	14000000
1979	24000000
1980	2000000
1981	1000000
1984	11000000
1986	35000000
1988	20000000
1990	20000000
1991	6000000
1993	5000000