Year	% of merchandise imports
1963	0.7900019426277278
1967	0.367522928905503
1970	0.2819780661722212
1971	0.26213897265413777
1972	0.2345738455009493
1973	0.29123328014783867
1974	0.19945569152850182
1975	0.23709856100170368
1976	0.66550961180526
1977	0.4282095963241727
1978	0.3458344799741946
1979	0.38319403918233447
1980	0.37769291758271983
1981	0.446746287967288
1982	0.13912204196213743
1983	0.3244641870372006
1984	0.43566266113780927