Year	% of total merchandise exports
1965	0.11507479861910241
1981	2.2988505746399786
1982	8.545420768824416
1983	10.346848481780183
1984	0.22946472792541273
1985	1.1327008874368676
1986	0.734629313010455
1987	45.38768025580745
1988	0.21652547362034716
1990	0.10677092268488186
1991	5.081319766544952
1992	1.4641864502936401
1993	0.9899645531265078
1994	2.3918999816400253
1995	3.353236228390693
1996	1.7298284650277798
1998	0.0032137118371719335
2000	0.004514096907435704
2001	0.0036194166377494443
2002	0.010337913891864892
2003	0.03350246459285899
2004	0.011432422891831214
2005	0.003831276763011716
2006	0.011378471949555352
2007	0.009116551429793148
2008	0.032917273759420954
2009	0.05742759308268548
2010	0.13444124885845712
2011	0.039529849061964197
2012	0.048161955522246745
2013	0.028606161646672033
2014	0.031650451541817656
2015	0.06305639230368465
2016	0.07309132130332509
2017	0.12401229559783426
2018	0.06984714580708956
2019	0.05723191436799618
2020	0.06580114330317897