Year	% of merchandise imports
1963	18.442012562325974
1967	17.08355401397541
1970	16.882754039364496
1971	18.368345971840213
1972	17.068175897951672
1973	18.351235950725727
1974	15.805929822951626
1975	13.871327106050824
1976	12.775365684017203
1977	14.949243715848354
1978	16.99385152928179
1979	18.225813776496665
1980	18.890400357406016
1981	22.283012428817255
1982	22.336544807471224
1983	26.075654673038006
1984	25.011804089286965