Year BoP, current US$ 1977 1640347.2571624 1982 1911101.79688291 1983 4379818.30501455 1984 1325074.19003628 1985 5043816.62428425 1986 3543110.26005055 1987 2884840.34379085 1988 2138673.18906577 1989 1316580.16632864 1990 3048502.91598866 1991 8897336.15741043 1992 17510931.5319049 1993 4262568.88226971 1994 5046787.28750814