Year	% of total merchandise exports
1960	14.617239300783606
1961	13.25652841781874
1962	12.460372157133012
1963	12.13668977258908
1964	4.749398117750054
1965	4.2587807445688695
1966	3.8724716144070985
1967	3.5142522452167126
1968	3.5759025167976315
1969	5.0222162380503566
1970	3.183087355404876
1971	2.997487348267686
1972	2.828096650635026
1973	2.9222573007103394
1974	2.954956160899538
1975	2.7613510245324586
1976	2.5212248960711987
1977	2.5984798996277516
1978	2.7833485262838042
1979	3.184809893071029
1980	2.7497987025811645
1981	1.9731631499191966
1982	2.2221053839094522
1983	1.6124335735604571
1984	1.4595553611676442
1985	1.698796217250028
1986	1.7434964034047207
1987	1.8001874337030592
1988	1.7702927718244406
1989	1.7724382623614647
1990	1.7831520190231216
1991	1.8792932548670471
1992	1.7384497458913923
1993	1.3818815136219722
1994	1.139573934561516
1995	0.9036304841501798
1996	0.8317059114740403
1997	0.23073884362537775
1998	0.21473310530233727
1999	0.1742798933141217
2000	0.2913297236093943
2001	0.2867063776731462
2002	0.16496326850502185
2003	0.13015033386895197
2004	0.11416761813717953
2005	0.10572771769354855
2006	0.11110661635196303
2007	0.08640607940914537
2008	0.07620982101780456
2009	0.06911834495134239
2010	0.09719706353252196
2011	0.08714158683192058
2012	0.1004048801677043
2013	0.10444948733078867
2014	0.058681141258599634
2015	0.028510070469902435
2016	0.031896058958857665
2017	0.027244993520502657
2018	0.030207460229329266
2019	0.04569487502029649
2020	0.047363546880907714