Year	% of merchandise exports
1962	76.54104082966956
1966	83.98406554884126
1970	85.47843966564082
1971	86.05847687308072
1972	89.54323803302358
1973	88.53757610147966
1974	91.99572176633976
1975	90.30340647269189
1976	87.52963939319629
1977	90.4082603260903
1978	96.39812929287532
1979	88.57194427384398
1980	86.6635211683527
1981	97.51060187346037
1982	93.72973713319318