Year	BoP, current US$
1977	3942782.26742167
1978	5520118.52266196
1979	6138691.83278426
1980	12755581.1044364
1981	8849269.05528855
1982	11113864.9600872
1983	9484117.16790607
1984	9612071.28348674
1985	10773740.5243898
1986	11497183.8786596
1987	11599607.1701582
1988	8781061.16603906
1989	17109105.3826433
1990	21989083.7197902
1991	28045264.8537148