Year	% of total merchandise exports
1960	2.9698620507863986
1961	2.664452877925364
1962	2.387608613524745
1963	2.440529238362926
1964	2.3615232443125618
1965	2.2848182785462283
1966	2.1839479823298755
1967	1.9309457036458095
1968	1.9535332422220435
1969	2.023637737923452
1970	1.7652560205751695
1971	1.740693196405648
1972	1.9241882665182681
1973	2.0196490397419584
1974	3.2163677130044843
1975	5.086307376366764
1976	5.649767414473296
1977	5.852695108202725
1978	5.515802320198634
1979	5.4607710910612965
1980	5.561151191075106
1981	7.314039024113153
1982	7.988435046344851
1983	6.226940809086133
1984	5.026268580215274
1985	4.2812782110266365
1986	3.04044166008945
1987	2.4613070525298446
1988	2.407060206670379
1989	2.447105538215543
1990	2.240897513620137
1991	2.233175731123937
1992	2.3325100002891164
1993	2.664229252160048
1994	2.5368107449625565
1995	2.164666329613976
1996	2.1262896630567334
1997	2.1222542223382233
1998	2.2039009725983143
1999	2.1486447404578013
2000	2.001542853430212
2001	2.218538876231872
2002	2.2922599766889173
2003	2.199925068002825
2004	2.204511318561817
2005	2.32566879907957
2006	2.337811249177105
2007	2.424488341085623
2008	2.8376069960048853
2009	3.066976147544641
2010	3.0298530437857596
2011	2.6851033621882716
2012	3.064039921878902
2013	3.1729404598146624
2014	3.2737929300433004
2015	3.486732845703169
2016	3.3753428528283225
2017	2.8505861441523557
2018	2.2969128659951044
2019	2.3621199920773996
2020	2.3282404614493175