Year	% of merchandise imports
1962	32.237938224343445
1966	32.44162449152703
1970	33.66721868327145
1971	37.713346540012836
1972	26.20228645165875
1973	22.709043054949586
1974	20.36520783838064
1975	26.010830085921178
1976	24.909565808979757
1977	22.720725221799977
1978	20.724940364395525
1979	18.830628507864446
1980	32.489536036847475
1981	20.269145197967454
1982	22.444235821544517