Year	% of total external debt
1971	32.856788136713284
1972	32.75993275723289
1973	29.738215099932013
1974	27.84031941077028
1975	37.0994763701436
1976	35.18502820221206
1977	38.206864799304334
1978	31.570097019905052
1979	11.145271304249647
1980	4.787207775177203
1981	4.054055523417572
1982	1.3714324523285546
1983	1.2656074064451799
1984	0.49224093619115494
1985	0.5663102151113585
1986	1.1886697424459092
1987	0.8841079311639275
1988	1.190694438382545
1989	1.1378666573600158