Year	% of total merchandise exports
1960	1.5820149875104081
1961	0.782608695652174
1962	1.056338028169014
1963	0.6527415143603132
1964	1.506186121570737
1965	2.2956326987681965
1966	2.717101758124667
1967	1.7448200654307526
1968	0.2788091133405514
1969	0.7618675522563001
1970	0.6855472737497
1971	0.2830905199199061
1972	0.535367447116573
1973	0.990079870094304
1974	1.0819340258771217
1975	3.8607845252220185
1976	1.246696047460429
1977	5.356573888538797
1978	8.454584385674448
1979	2.707667041230876
1980	5.04171267329162
1981	2.9156094163566397
1982	3.971867849257794
1983	2.070910792144038
1984	1.6769985934529927
1985	1.9192600205858323
1986	0.31894103856717393
1987	0.18150564749379985
1988	1.4242982244918463
1989	0.42665983005500674
1990	5.271505889530061
1991	3.45324476746586
1992	2.0661800504888985
1993	2.3341094026662543
1994	0.630644520507098
1995	1.3778929370199895
1996	2.3053932763641782
1997	1.1382712802402428
1998	1.408048269347555
1999	2.3348561496868725
2000	0.4478357621396361
2001	1.2646529205862689
2002	0.46877684381439927
2003	0.6522400431851075
2004	0.8726434076539086
2005	0.7250720723823857
2006	1.0346861617164473
2007	0.5760681635259766
2008	0.39792202516489406
2009	0.2850529365051614
2010	0.273531131411386
2011	0.8118425376975165
2012	0.35072592451718543
2013	0.8581393823412947
2014	0.6815712827862687
2015	0.7232219824612904
2016	0.7886438338307221
2017	1.615796006193295
2018	1.0452431256802395
2019	0.9321475735926666
2020	0.7187162731348358