Year	DOD, current US$
1976	0
1977	0
1978	3500000
1979	3500000
1980	3500000
1981	3390000
1982	3150000
1983	2890000
1984	19424000
1985	25509000
1986	21681000
1987	21341000
1988	18019000
1989	11860000
1990	4967000
1991	0