Year	% of total merchandise exports
1962	0.07013995367500735
1971	0.06361323155216285
1972	1.7527675276752765
1973	0.49136024895585945
1981	4.827682203254657
1982	2.223790497261841
1983	1.6977183744252913
1984	0.1491079126306384
1985	0.4042153890573119
1986	0.38451107275294216
1987	0.40060922571906543
1988	0.46907169834577833
1989	0.270891884326698
1990	1.0912055149270845
1991	0.7367738652005809
1992	1.2751569740341642
1993	0.8795846385401916
1994	1.179005028283788
1995	1.2542469269277676
1996	2.20082372409009
1997	1.5407816377772965
1998	2.392676295564707
1999	2.3253746566914177
2000	2.6179955954628187
2001	3.091262910242588
2002	2.8461812319152355
2003	0.9912649569031752
2004	1.0156611912716575
2005	0.8181423833351249
2006	0.5808081788438126
2007	0.4065910701966642
2008	0.750267547567121
2009	0.6293949457144052
2010	0.687675749935194
2011	0.5421253642764132
2012	0.3835958100834749
2013	0.30816881228493975
2014	0.4292560344295886
2015	0.697502787328171
2016	0.6072822558826874
2017	0.517160178789681
2018	0.42339288262038133
2019	0.395766041081948
2020	0.38708037872163525