Year	% of total merchandise imports
1964	3.1578947368421053
1965	4.49438202247191
1966	6.41025641025641
1967	6.756756756756757
1968	6.578947368421052
1969	3.9100684261974585
1970	2.2388059701492535
1971	2.272727272727273
1972	3.1578947368421053
1973	4.145979206450244
1974	6.6569236390208255
1975	1.9077408628511852
1976	0.7867900317417439
1977	0.2996471895993427
1978	1.0038152387302293
1979	0.25078457744900245
1980	0.1821551834334654
1981	0.0834488205403311
1982	0.13661751115039983
1983	0.16727923933759836
1984	0.13661751116357965
1985	0.10652257815515244
1986	0.12274959083469722
1987	0.12274959083858371
1988	0.12274959083144908
1989	0.12274959082161332
1990	0.27774184445352207
1991	0.15836338358659255
1995	1.1905040200692192
1996	2.114915721459679
1997	0.5402193912552666
1998	3.2243400505887942
1999	1.25333174946082
2000	0.039116926406663345
2001	0.1579330519363275
2002	0.21883598876438126
2003	0.3835014959101228
2004	0.6906635898080258
2005	0.5784136894300339
2006	0.13870110891255535
2007	0.1253599446703883
2008	0.6373630816909527
2009	0.8880043581336119
2010	0.12271923127924209
2011	0.20582498091102566
2012	1.2125503581653134
2013	0.7070534386436146
2014	0.6478931265612079
2015	0.6021727344555624
2016	0.8980067625214715
2017	0.9495192995265251
2018	1.392566578326414
2019	1.3282552495098752
2020	0.8148101401484815