Year BoP, current US$ 1977 16081915.6651331 1978 13560472.1137197 1979 10022487.403164 1980 4113034.02401763 1981 592496.740767179 1982 663407.948599482 1983 6859703.44476216 1984 8069450.07611043 1985 11356377.9422322 1986 18114042.9187425 1987 26306283.4579129 1988 37072573.5536331 1989 33365903.0723858 1990 43744180.3968975 1991 40952559.6121764 1992 50964933.4121676 1993 41877002.3247342 1994 15977890.8021002