Year	% of total merchandise exports
1960	1.356138042708228
1961	1.4150047483380817
1962	1.7408649922930457
1963	1.5842618384401115
1964	1.364870104691741
1965	1.1431376674381093
1966	1.2553968781135836
1967	1.0758998435054772
1968	0.7707364815267923
1969	0.8929515218934196
1970	1.0462192160943462
1971	1.3145448298387679
1972	0.9752224280798909
1973	1.1941974486531657
1974	1.7900763220653642
1975	2.390340382869318
1976	2.059378322812892
1977	2.881042710274645
1978	2.7875617675137305
1979	3.8355764860812402
1980	4.263211712233386
1981	4.223460274093836
1982	4.686516407893902
1983	3.9763139691574176
1984	3.503365224823133
1985	3.171252784197128
1986	2.1386101082480686
1987	2.159176763578364
1988	1.9186038623391874
1989	1.8053809090249573
1990	1.9037714944753255
1991	1.9900156612483886
1992	1.8956665770313705
1993	2.029779362038173
1994	1.6048875816340995
1995	2.118858977332155
1996	2.5060417772060757
1997	2.0204316834232388
1998	1.7885497516976978
1999	1.8312117134029544
2000	2.2656631772265956
2001	2.542136140605702
2002	3.2892072242655566
2003	4.337152430214154
2004	4.157018265440467
2005	5.327024631368072
2006	4.546806648244351
2007	4.71452420183876
2008	4.073447377666443
2009	3.0192493396809446
2010	2.6896090726969892
2011	2.5656082274664325
2012	2.610067775841971
2013	2.760788509212384
2014	2.67423597575869
2015	2.9557760478676753
2016	2.568611226680153
2017	2.5169464102280137
2018	2.5519492153726984
2019	2.181656600636428
2020	2.3297508169932892