Year	% of total merchandise exports
1960	2.263083451202263
1963	2.33160621761658
1964	3.7037037037037033
1965	1.8626309662398137
1966	3.269447576099211
1967	7.296137339055794
1968	5.392156862745098
1969	8.197084853738685
1970	6.030805225190095
1971	3.8068219794583116
1972	3.8774770022091065
1973	3.889715875995081
1974	1.5717635311633547
1975	1.324324529851484
1976	1.0562499278254878
1977	0.7326653306613227
1978	0.45160348167272385
1979	1.4146930163276097
1980	0.9346589810050678
1981	0.1609261037713811
1982	0.04591816796279651
1983	0.4678998534998978
1984	0.17453947835864927
1985	0.06442934813324441
1986	0.4486407954847321
1987	1.5397160115165187
1988	0.6193276660299935
1989	2.837810910028434
1990	3.4663252923500143
1991	1.4924734580535564
1992	2.6626930903193204
1993	1.6464464326305983
1994	0.7650403165787345
1995	3.5975299052655645
1996	1.517698038600918
1997	1.9600277549164924
1998	2.942982989096542
1999	1.6748095614269736
2000	0.5207479344483952
2001	3.241625566759228
2002	1.1534857977236401
2003	2.3906980439311103
2004	1.0599221715152989
2005	1.9639177947016782
2006	1.673684771189741
2007	1.7875421715209832
2008	2.6583678463200844
2009	2.6142411424466214
2010	10.208231706783485
2011	4.698681674204334
2012	5.0681126423369705
2013	6.525231080436708
2014	6.308986915838559
2015	5.921770238925425
2016	5.181688013552379
2017	4.127647200326255
2018	8.160350832173602
2019	4.85981706993035
2020	4.593231916453228