Year	% of total merchandise exports
1960	2.9173075903039303
1961	2.988798121606418
1962	2.6743976986695435
1963	2.649964860060358
1964	2.5317412333736398
1965	2.4270208319288074
1966	2.4431800894514253
1967	2.158109302391881
1968	2.399700971841515
1969	2.2903232763268564
1970	2.5446082234290146
1971	2.4187097896018086
1972	2.7662980209545984
1973	2.8019182040918897
1974	3.395341042399866
1975	4.756535506043171
1976	4.978643706967406
1977	5.161935271331038
1978	4.33345917445397
1979	4.082535596492639
1980	4.071738712387276
1981	4.5557269300902865
1982	5.017857760725229
1983	4.320109439124487
1984	3.5962733399880835
1985	2.923708124731277
1986	2.2325695642190815
1987	2.0964927318361837
1988	1.9637354823417872
1989	1.6729934712857748
1990	1.6396982477114888
1991	1.7059784769639597
1992	1.5595137704132167
1993	1.4591562127322273
1994	1.218927929543246
1995	1.2116954439428995
1996	1.2526760138774984
1997	1.334377638268377
1998	1.33377625668254
1999	1.2612989809421986
2000	1.3904248369439705
2001	1.4657386341568193
2002	1.5584874678184337
2003	1.4506729410528127
2004	1.5537346447589115
2005	1.5268874698924155
2006	1.512635466242297
2007	1.5628548893934102
2008	1.755460663691635
2009	1.9858017151297498
2010	1.8440660951757437
2011	1.6674414379507965
2012	1.2698984241182871
2013	1.4886142570477545
2014	1.6856381163728686
2015	1.6456147319718877
2016	1.311717809297878
2017	1.324521821312736
2018	1.2483962321936861
2019	1.1602180107475473
2020	1.2001345767159541