Year	% of total merchandise exports
1960	0.9688373951258491
1961	1.0567597398022686
1962	0.8121871981736764
1963	0.6648019781912521
1964	0.7576939748591244
1965	0.9612812888406412
1966	0.931598700508819
1967	0.7501957928580262
1968	0.4476770004440763
1969	0.41589648798521256
1970	0.33776023277380274
1971	0.3322877726693307
1972	0.3801964149504195
1973	0.3852851816908492
1974	0.34770896059095285
1975	0.5410374786225957
1976	0.3906327902199708
1977	0.4530775423573755
1978	0.7107000055866367
1979	0.5787373317774697
1980	0.503467171802591
1981	0.5921629008269034
1982	0.44450343671897036
1983	0.43408762757507646
1984	0.644088104440802
1985	0.5830664367249734
1986	0.6225736022831424
1987	0.6432554771153229
1988	0.578566157909045
1989	0.4949258232056614
1990	0.4331115472027062
1991	0.39827389203431374
1992	0.3646645840462995
1993	0.4693763805398449
1994	0.4216231761749928
1995	0.4158198600710599
1996	0.4988996053990372
1997	0.4308414246625085
1998	0.3971377838256894
1999	0.3339730551025878
2000	0.3181381986107405
2001	0.33288002875678857
2002	0.32127880090479194
2003	0.3283789680314077
2004	0.3910290752546204
2005	0.40070898957245077
2006	0.41801719141065413
2007	0.5049451670201004
2008	0.47487895283236015
2009	0.6197296602400406
2010	0.5451491150635083
2011	0.5175355080363048
2012	0.5029195290691914
2013	0.45488348747209945
2014	0.5088678268202037
2015	0.5318474703826156
2016	0.5367828279057704
2017	0.6646243834587042
2018	0.5369598104026707
2019	0.5932666231533906
2020	0.4796621523156232