Year	% of total merchandise exports
1972	4.915783857937656
1973	5.077435796902567
1974	10.629637114235399
1975	13.955976765515132
1976	8.665900804155637
1977	9.747916886404388
1978	10.69090483984101
1979	10.267353595707709
1980	11.358315299239404
1981	13.406204587097998
1982	10.349451865739656
1983	10.02953924302239
1984	8.48256463110882
1985	12.344702619908098
1986	8.502548064483468
1987	5.909175334323923
1988	6.256534973240495
1989	5.094596802233985
1990	4.949837855569618
1991	3.984510420670282
1992	3.4047597431886527
1993	2.48287436160947
1994	3.372388598940322
1995	2.872964310660636
1996	2.892021022544532
1997	2.569656384495934
1998	2.0327073267279676
1999	1.711330098476267
2000	1.9572226471183742
2001	1.9109059533732586
2002	1.9677566116331004
2003	1.5707809741624372
2004	1.248176543211993
2005	1.1808198323047434
2006	0.906560927822727
2007	1.017827063447237
2008	1.2900138586151393
2009	1.4777936800662812
2010	1.7377530136970805
2011	1.5645095139294685
2012	1.8006423344776818
2013	1.985752496622879
2014	1.8406722517389764
2015	2.0310513015621554
2016	2.093943422452349
2017	2.162209569969072
2018	1.9253970478970377
2019	1.8463942285680546
2020	2.3744707617685674