Year	% of total merchandise exports
1978	0.1887318605571981
1983	0.0001271100264388855
1986	0.06855732891901178
1987	0.6967442562474443
1988	0.374200551060308
1989	0.9467694617562719
1990	0.11151493255828855
1991	0.7268326432489575
1992	0.9215751565631607
1993	0.3937477037356235
1994	0.19933927669592033
1995	0.24106821415563234
1996	0.20466486257591318
1997	0.1612294630925242
1998	0.2582128440699356
1999	0.5659064322491952
2000	0.7535223937435183
2001	0.6925062631049625
2002	1.023298170040454
2003	1.4420042228151762
2004	2.0937964516607894
2005	1.343976123903324
2006	1.3136608176688642
2007	1.6311851424216959
2008	2.2060559266481583
2009	2.5185270878068637
2010	3.040937602677424
2011	3.7551399006878934
2012	2.749237250780343
2013	3.0415454815170326
2014	3.8208644177940396
2015	5.948852714926419
2016	7.272055133528921
2017	5.750589595672411
2018	5.385398490220158
2019	4.705423094759873
2020	5.345067974313293