Year	% of total merchandise exports
1960	0.9006391632771645
1961	0.6513026052104208
1962	0.5209690023443605
1963	0.6188757091284167
1964	1.5498799388779743
1965	1.8129965369729069
1966	0.5802146794313896
1967	0.3953147877013177
1968	0.4889228418640183
1969	0.39576713572401273
1970	0.8845942557716958
1971	1.4465431606424246
1972	1.536920408485062
1973	0.6797670101773027
1974	2.3064473172030895
1975	1.9041562570974335
1976	2.374500759786453
1977	5.28983967049443
1978	5.6793511553257705
1979	3.068223655020721
1980	3.079122255509753
1981	3.9269795005208836
1982	5.861593022970718
1983	4.732540359776785
1984	5.745314794023663
1985	3.5178434719090865
1986	2.946945279560864
1987	2.571730857569469
1988	3.1391877906077457
1989	2.263002354137255
1990	1.8989493046834758
1991	2.031969365022961
1992	1.7542532241451674
1993	1.6639135704104513
1994	1.2455719714877205
1995	1.1812925737189544
1996	1.0118407195262948
1997	0.9485675276311362
1998	1.0092604360501132
1999	1.617634210942754
2000	1.506568743032381
2001	1.8854247535933788
2002	1.6995996025620101
2003	1.5044135893245822
2004	2.0196903724455484
2005	2.002155170566983
2006	1.965392269513867
2007	2.252954120736273
2008	2.876159907671666
2009	3.2596325745057637
2010	2.6034288269092527
2011	2.6892902530288993
2012	2.7254274201139186
2013	2.6127726720638753
2014	2.8409103580409
2015	2.4047536260293807
2016	2.214760994938296
2017	2.358964985906538
2018	2.34814492532132
2019	2.158934834739373
2020	1.7605166324981678