Year	% of total merchandise exports
1972	3.435124080997667
1973	2.457791842701322
1976	0.04707075095951915
1979	3.262618710794518
1980	3.621426917145714
1981	2.237669068432704
1982	2.2376690683382017
1983	2.23766906842063
1984	2.2376690688095424
1985	2.2376690683750105
1986	7.393630039264258
1987	7.484587850062517
1988	9.759469181494348
1989	9.159354566122962
1990	5.730846883731212
1991	6.630325349238516
1992	6.580352377081384
1993	6.278502641704938
1994	6.852629786659094
1995	6.869515912402334
1996	5.38572777728151
1997	4.30891756404729
1998	5.285969197910208
1999	4.19858761446368
2000	6.250706561611306
2001	4.499995610443013
2002	9.227600434377376
2003	5.3602586037890285
2004	5.978406851983433
2005	6.638522407683175
2006	6.057960926806658
2007	5.239814400995153
2008	6.231290894669276
2009	8.260881095691595
2010	9.20471443153134
2011	6.476883245234803
2012	7.259240201519355
2013	6.54866340644246
2014	6.891038240184977
2015	9.559297068647115
2016	11.845276085522025
2017	8.310630378057231
2018	5.0067427335846215
2019	4.151296592704619
2020	6.043055335330112