Year	% of total merchandise exports
1968	0
1970	0
1971	0
1972	0
1973	0
1974	0.10337698139214334
1975	0
1976	0.14998125234345708
1977	0.5229517722254581
1978	0
1979	0
1980	0
1981	0
1982	-4.5653369448184155E-09
1983	5.218687734091092
1984	2.0382347949871895
1985	6.3047183260227495
1986	11.511586176830141
1987	5.8051617688943224
1988	5.591842504237414
1989	3.591069734042814
1990	2.5269903114413523
1991	2.2861699745624646
1992	7.386809501779991
1993	0.010584217838050474
1994	0.00179511035589936
1995	0.01252187101503435
1996	-1.1163122961230086E-09
1997	-5.278790749509804E-09
1998	-1.0088246610342646E-09
1999	3.771918835336274E-09
2000	0
2001	0
2002	0
2003	0.012048303415477149
2004	0.8055112740427957
2005	0.014202395112878463
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0