Year	% of total merchandise exports
1970	17.71107511642033
1971	14.632300780326318
1972	0.27260926006057984
1973	1.3942351407874398
1974	4.861477340646204
1975	0.014533576020983716
1976	0.02058937073735684
1977	0.01524003048006096
1978	0.01917444113115979
1979	1.2232345294772276
1980	0.0425004857198368
1982	1.2799218368343916
1983	1.2799218369694076
1984	1.2799218370183132
1985	1.2799218368715666
1986	10.773128159788694
1987	11.261733831475585
1988	8.342867097617871
1989	8.977273811296252
1990	14.66726733069033
1991	14.774012946445673
1992	18.417384775607733
1993	22.340848332363723
1994	22.899318585876717
1995	29.91624388106049
1996	35.69034758733501
1997	46.55390449536388
1998	43.08607211290376
1999	38.982768645182766
2000	48.186413783205175
2001	38.13323112401069
2002	37.48602138425042
2003	43.741553420550545
2004	46.886970593797514
2005	43.562859073019936
2006	48.0810698444447
2007	48.75623969273268
2008	45.77024415036497
2009	42.186316142900324
2010	50.12583372943301
2011	53.7202604728141
2012	50.81717382618427
2013	55.62972693723967
2014	59.28001603959898
2015	58.57715032145256
2016	59.46423762142585
2017	59.53966813701168
2018	60.06859575422181
2019	55.26212940552892
2020	55.262129425697104