Year	% of total merchandise exports
1960	1.9517913233486592
1961	1.7595286264896555
1962	1.9848424984734745
1963	1.9760755843922622
1964	2.498097638178015
1965	2.6627029346290687
1966	2.4181594569781915
1967	2.23001112775318
1968	2.0823448895532164
1969	2.0831020901829147
1970	2.141830394514353
1971	2.2659702184863644
1972	1.8118334519496782
1973	1.7577425182743842
1974	1.955721505257651
1975	2.309649308697373
1976	2.2054802411599295
1977	2.0437562180105417
1978	1.9016180276297816
1979	1.5476509737064852
1980	2.0319091847406785
1981	2.3209001597004892
1982	2.0481033990565165
1983	1.6808935430171563
1984	1.5639006581577228
1985	1.3591941603307582
1986	1.0163181923975204
1987	0.9566723590402914
1988	0.9135241254945399
1989	0.8467816963008054
1990	0.8530702218556591
1991	0.9308991637331288
1992	0.9794285032049849
1993	0.8171054139206996
1994	0.6990606784342366
1995	0.740535020758202
1996	0.7843006352760307
1997	0.7389690637094097
1998	0.7912012840371191
1999	0.6433234956304374
2000	0.5967839782932466
2001	0.7233442590197181
2002	0.6708914920598258
2003	0.7377636413985315
2004	0.8085672332366866
2005	0.8847203839191254
2006	0.941077872532953
2007	1.019386796430633
2008	1.1674760321326476
2009	1.1836732723163734
2010	1.1280126928360044
2011	1.1931267045204992
2012	1.2285036016508348
2013	1.2846964427176968
2014	1.3397170778202885
2015	1.0411639724786053
2016	0.8185020821291328
2017	0.7831396206821136
2018	0.8211674239546829
2019	0.8406788275943249
2020	0.8440421770778708