Year	% of total merchandise exports
1981	0.429253496361111
1982	1.168451442845787
1983	0.9561056820647855
1984	0.8663072322176681
1985	0.5476193927538966
1986	1.051510369701022
1987	1.0781422859394971
1988	0.9729145576864582
1989	1.0387045124567742
1990	0.6920235425157573
1991	0.7659980292846423
1992	0.867109947603988
1993	1.593636119909581
1994	1.9240364860861507
1995	1.4481587886956266
1996	1.135594677479105
1997	1.1128325451648478
1998	0.8624337349397591
1999	0.8197072300997578
2000	0.8775535921785772
2001	0.7172919867018088
2002	0.9318844112505484
2003	0.7262432120251853
2004	0.7460533116275756
2005	0.9039333446940532
2006	0.8029051170710018
2007	0.607083234277542
2008	0.6183187500458182
2009	0.3217391765360679
2010	0.4227467062462723
2011	0.46327127322969375
2012	0.4097931567321994
2013	0.31872985937890547
2014	0.2951065824340857
2015	0.34074284054798204
2016	0.40711216871064954
2017	0.5400675971073048
2018	0.5313276081982938
2019	0.5407346389914082
2020	0.4894632310068072