Year	% of total merchandise exports
1963	0.004631881238565043
1985	1.342572542226072
1986	0.8455695047487244
1987	1.17185807990878
1988	0.9587513505913713
1989	0.5118914134917668
1990	0.9584340573048266
1991	0.14048363833892147
1992	3.6794302322393135
1993	4.828218530403238
1994	2.4727040603650576
1995	1.5964922082881223
1996	1.456199233422757
1997	1.709480742048315
1998	1.7183117538399122
1999	1.3760589517739927
2000	1.2251294290729933
2001	1.6394624175699744
2002	1.5176441065536856
2003	1.1222429065444768
2004	1.1807909523188154
2005	1.1267130342162281
2006	1.6243577336898092
2007	1.6973171838404841
2008	2.1627326110874083
2009	1.5102001168412482
2010	2.150929297466787
2011	2.4419360113316237
2012	2.46127148376778
2013	2.620439168731504
2014	2.5169868552161785
2015	2.0190600982147875
2016	1.9074506195293848
2017	2.1524073932202277
2018	1.7348163464034227
2019	1.5855032534774696
2020	1.6080392407648973