Year	% of total merchandise exports
1961	4.123711340206185
1962	4.261363636363636
1963	5.0602409638554215
1964	5.708245243128964
1965	4.935622317596566
1966	3.953488372093023
1967	8.577405857740585
1968	2.7531461761858664
1969	2.4367122697403856
1970	18.515981735159816
1971	14.622545528538
1972	13.875173221036771
1973	10.297757974397058
1974	3.7777064772612396
1975	6.919627844412061
1976	4.619166786096198
1977	2.421324401646779
1978	3.3411624033821585
1979	1.0689689365249562
1980	0.8329816855219688
1981	0.5716073606676241
1982	1.0516951980707667
1983	1.939713271829917
1984	1.5903570606515756
1985	1.6734546722078723
1986	0.5014771195268828
1987	2.69886529605035
1988	1.0184055372824201
1989	1.2333187987339167
1990	1.0084966146613517
1991	5.022956782730041
1992	1.5216912783667376
1993	1.7533172821432945
1994	1.1090415377094467
1995	1.6844323192906538
1996	1.0358888571812042
1997	1.0558829428543783
1998	1.509903494344337
1999	1.632526844150695
2000	3.056675405136453
2001	1.7916097860987783
2002	3.8294342406475548
2003	1.8539117920533872
2004	10.764004005243587
2005	13.187983610308688
2006	11.105082806809744
2007	10.46401306929307
2008	9.315643602711416
2009	20.699390379193762
2010	22.314278215580373
2011	17.055742465936632
2012	16.971706443163445
2013	18.482380009491976
2014	35.6754221021173
2015	43.267365495199186
2016	37.786124121762796
2017	22.686957475192365
2018	11.603168469942075
2019	5.381687391150802
2020	7.193182459588616