Year	% of total merchandise exports
1960	8.035714285714286
1961	10.95890410958904
1962	10.276399716513112
1963	4.035608308605341
1964	3.6057692307692304
1965	3.050847457627119
1966	4.482412060301508
1967	6.715911020546781
1968	3.478400686032801
1969	4.120524178663714
1970	3.905985796415286
1971	2.722551928783383
1972	2.863703318603241
1973	4.63428671521157
1974	2.0797017238039786
1975	1.3904146649395792
1976	1.9084888621312461
1977	2.0872184765456896
1978	1.0477757477262861
1979	2.7410971849199246
1980	3.97691500524659
1981	3.4682897389473144
1982	3.468289739409263
1983	3.4682897395389136
1984	3.468289738633576
1985	3.4682897383346414
1986	7.440452661418746
1987	7.516413537639294
1988	6.650463292316402
1989	7.8889441030117595
1990	6.354879961008647
1991	5.876774216105444
1992	5.992728325449133
1993	1.8285343500573752
1994	1.1045648565543342
1995	0.05396636584137886
1996	0.31961478495706136
1997	-8.628098944359106E-10
1998	1.4355527176259897
1999	1.0786481462247577
2000	0.00034070208616856644
2001	0.001383513094466477
2002	0.0010060095519634695
2003	2.7942486807924478E-05
2004	3.260928869073273E-05
2005	8.758721132392832E-06
2006	1.3576390661469968E-06
2007	3.61276435472625E-06
2008	0.012293888283949186
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0