Year	% of merchandise imports
1962	69.15490972160906
1980	46.97038928086237
1981	49.357767346267494
1983	55.03229198572846
1984	52.59362342398152
1985	46.779266936073995
1986	47.72975758785273
1987	50.85833848147499
2009	62.4711700201807