Year	% of merchandise imports
1963	21.43883317194834
1972	19.622779624038703
1973	23.96350418701179
1974	28.680936505743475
1975	17.509513212290205
1976	14.936751827498496
2000	1.5339808552964436
2001	1.0756638880855987
2002	1.5557113680350412
2007	18.762394603726882
2008	3.87608288766086
2014	7.195897227902301