Year	% of total merchandise exports
1960	0
1961	1.1811023622047243
1962	0
1963	0.4634994206257242
1964	2.370500438981563
1965	1.3646702047005308
1966	0.3324468085106383
1967	0.5266237565827969
1968	0.02930025139615698
1969	0.8476671493660156
1970	5.18390693844658
1971	3.2159733902465453
1972	4.818665568300486
1973	4.204761598470996
1974	4.531922305295548
1975	3.4483388802137798
1976	2.7509104568623686
1977	5.078030107565819
1978	2.7423894840147964
1979	6.279112135267413
1980	6.442560914430606
1981	5.461590586692153
1982	2.8248172582957167
1983	5.97849298352654
1984	6.208141716122461
1985	4.736767756373558
1986	2.5845644501358653
1987	3.2948807724910627
1988	6.687403153269476
1989	9.039042185492749
1990	7.984778074102595
1991	9.858227844746517
1992	22.871933267073956
1993	6.505603652943992
1994	10.294208027191374
1995	4.379820638985469
1996	4.658077197300516
1997	1.1745145821869352
1998	2.147748166620876
1999	2.956617398011607
2000	4.703241550198071
2001	8.253705817422267
2002	13.597625246680664
2003	11.189211966134165
2004	11.094314314608587
2005	5.898840774505124
2006	5.174400916576005
2007	5.233187691215889
2008	4.675097797897691
2009	5.508981894488767
2010	4.984928578868531
2011	3.1777645047412095
2012	2.6407891212074293
2013	1.3121828456688962
2014	1.0134468982631166
2015	0.6662278901877365
2016	0.1995475879400336
2017	0.017956842603695018
2018	0.056871212240938836
2019	0.08502913238294876
2020	0.09289277503653852