Year	% of total merchandise exports
1960	0
1962	0
1963	0
1964	0
1965	0
1967	0.04506534474988734
1968	0
1969	0
1970	1.1350407450523865
1971	6.949429037520391
1972	0
1973	0
1974	0.8302420067125951
1981	0.6019382253732734
1982	1.1265067016022208
1983	-2.2906147331921346E-08
1984	6.389776343879346
1985	6.002471193281046
1986	9.754412746752193
1987	5.768761145816264
1988	2.392103673870285
1989	0.557347828148874
1990	0.8478661249737753
1991	0.6160563010625019
1992	0.2638466362732345
1993	20.29106029106029
1994	29.094540612516646
1995	26.124678663239077
1996	10.882444652323043
1997	30.852115975222528
1998	18.2222036915349
1999	15.440570778031256
2000	0.014276703930835515
2001	0.00013489610045167193
2002	0.0015073488868995327
2003	0.016076852734900244
2004	0.022950631545858538
2005	0.006998967878763559
2006	0.0016535106071175992
2007	0.009162448374517134
2008	0.02022469847970989
2009	0.008829473891505327
2010	0.006888999925604196
2011	0.0026572094076492397
2012	0.00964041917093361
2013	0.0006697951963652915
2014	0.004358695215136935
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0