Year	% of merchandise exports
1963	1.2206406625285972E-06
1967	0.021272598455950694
1968	1.1715349199477958
1969	2.888320658017893
1970	3.689724574643545
1971	1.6351160677947472
1972	1.7795423788000988
1973	1.6749775601014878
1974	5.725984640084005
1975	4.18264065007312
1976	0.2898530226282244
1977	0.11943934378729935
1978	3.988242448555395E-06
1979	0.04055266909750006
1980	0.4728390119349611
1981	0.3359590170317604
1982	0.08876585795164049
1983	0.5993787323304403
1984	0.6663796009269296
1985	0.8504842122730933
1986	0.05550526766777282
1987	0.21681697953086684
1993	0.010580540818699037
1994	0.05250505420140491
1995	0.0193108153077716
1996	0.10927719888838192
1997	0.28118623566439616
1998	0.256088397843228
1999	0.5277983275164725
2000	0.1020976911118
2001	0.026810451605649068
2002	0.05581403782464918
2003	0.1949788952076175
2004	0.10107453163439006
2005	0.6081155686188416
2006	0.33762677904870597
2007	5.384673185980851
2009	6.177073472290586
2010	8.072303876293905
2011	4.109020128029592
2012	3.909783740737756
2014	0.026091491181979707
2015	0.018603830825984234
2016	0.021977960821572294
2017	0.8170416946574363
2018	0.3088225781475831
2019	0.014076837295992836
2020	0.009890520380133003
2021	0.013241011947448042