Year	US Dollars
1966	123830001.83106
1967	81250000
1968	106580001.83106
1969	108830001.83106
1970	152690002.44141
1971	239750000
1972	295320007.32422
1973	327529998.7793
1974	262959991.45508
1975	214869995.11719
1976	155419998.16895
1977	247940002.44141
1978	305899993.89648
1979	337600006.10352
1980	399609985.35156
1981	350589996.33789
1982	397690002.44141
1983	482600006.10352
1984	371100006.10352
1985	402519989.01367
1986	420019989.01367
1987	486589996.33789
1988	431450012.20703
1989	482510009.76562
1990	431519989.01367
1991	447630004.88281
1992	474850006.10352
1993	550989990.23438
1994	554000000
1995	544590026.85547
1996	483250000
1997	467000000
1998	467250000
1999	451940002.44141