Year	% of total merchandise exports
1960	0.13752003249401912
1961	0.1226011777754649
1962	0.2554606559076383
1963	0.28933497342930714
1964	0.3281012061279149
1965	0.2753846776759993
1966	0.3575840506291344
1967	0.44825025882008007
1968	0.4974359408347977
1969	0.48748721125237704
1970	0.4659664653763139
1971	0.5013248907105217
1972	0.4469140778392225
1973	0.339732815067482
1974	0.3161241245084313
1975	0.525648077996879
1976	0.5507297514201085
1977	0.45566654888685687
1978	0.43202603106497667
1979	0.3371071427504513
1980	0.5159017145774751
1981	1.2862926646358706
1982	1.2957312524899316
1983	1.3802537419259466
1984	1.4817726964444546
1985	1.5277951671430419
1986	0.9599218386017112
1987	1.2873293883947967
1988	1.2118316648662748
1989	1.0503060405936995
1990	0.9628383055749855
1991	0.5089610162957457
1992	2.529920836199615
1993	2.950482995341086
1994	5.424880876257489
1995	5.920007592855332
1996	5.734505878590104
1997	5.621233175676066
1998	4.91878116217327
1999	3.784619149211579
2000	3.9710265302489494
2001	3.762331758859288
2002	4.16444366932049
2003	4.7517396092555595
2004	4.625692886782211
2005	5.249915176154518
2006	5.536741166125402
2007	6.713186860294809
2008	7.142949094226411
2009	4.9798168697813034
2010	5.105661197346968
2011	5.653810096959089
2012	6.294312404901612
2013	6.201670953198217
2014	5.846535656961001
2015	4.854035575581837
2016	4.826992724276178
2017	5.206400282488204
2018	5.103373899973724
2019	5.335004104944201
2020	5.334682752115953