Year	% of merchandise imports
1962	5.026447819341668
1966	5.449887923552266
1970	6.29045506737674
1971	4.238096081663121
1972	4.689164624392526
1973	4.254182700918052
1974	6.7079137828789905
1975	6.158262804651118
1976	6.841314910117929
1977	4.362337320848456
1978	6.63474903048627
1979	5.4765284846129765
1980	0.7383033454244979
1981	2.1904339125904992
1982	12.44429476379573