Year	% of total merchandise exports
1960	5.490993608367228
1961	2.8306613226452906
1962	3.282104714769471
1963	2.707581227436823
1964	2.9906134031870772
1965	2.750050926869016
1966	1.6536118363794605
1967	2.005856515373353
1968	2.4140565317035905
1969	1.754709487063096
1970	2.66786866310763
1971	2.86770837109814
1972	2.2789459527144222
1973	1.9964155411892721
1974	5.996599127245908
1975	3.816034521916875
1976	4.135120960692817
1977	3.38380850073817
1978	4.453946239984318
1979	5.261160566784039
1980	5.5089068508200585
1981	6.964471744192004
1982	6.114852147726797
1983	6.903395831467189
1984	6.450524656706105
1985	6.618484727168012
1986	5.782504085299243
1987	6.036491103011973
1988	5.600111338370676
1989	5.474263592213878
1990	4.766395301133182
1991	4.741555091802295
1992	4.039737689445689
1993	4.102103807542036
1994	3.345526200803789
1995	3.9290579577275344
1996	3.0682978049518748
1997	2.6404868108698216
1998	2.6690854069557335
1999	2.605961009971781
2000	2.2414869396771357
2001	2.555499876555136
2002	2.77369190341841
2003	2.763212765078213
2004	2.991346853163881
2005	3.4359809063016287
2006	3.7676342866552797
2007	4.180971769706739
2008	4.972833844247104
2009	5.244778637401993
2010	4.762997475188895
2011	4.273599136740959
2012	4.739305220910031
2013	4.962598943133263
2014	4.917230982442867
2015	4.71527951016921
2016	3.8874014413225924
2017	3.246375427784254
2018	3.1356938030462036
2019	3.209763248970942
2020	2.9265346656139863