Year BoP, current US$ 1977 23359684.6373573 1978 32691373.4584674 1979 35003490.2457593 1980 53829155.29937 1981 51723861.4377807 1982 41554291.4592933 1983 35665734.3220208 1984 34779192.5146484 1985 46789968.7815884 1986 56002510.4999351 1987 67838667.7384174 1988 62327047.2242026 1989 65565692.2831663 1990 69076137.7602393 1991 50487951.7490027 1992 45139290.1711326 1993 49264984.1819904 1994 33140930.0821377