Year	% of total merchandise exports
1960	6.007244260890791
1961	5.497379803183135
1962	5.343616933678728
1963	4.870045627462941
1964	6.443598798740164
1965	6.413694062241193
1966	5.979321183578072
1967	5.42662918320583
1968	5.342054685564005
1969	4.4017436513415165
1970	4.685270763885127
1971	5.150266923182283
1972	5.061611600476449
1973	4.971307564037527
1974	5.894508812360965
1975	6.303726123717636
1976	4.688401924676133
1977	5.3780543570024015
1978	5.442246087899169
1979	4.8514349252996425
1980	5.772028465989339
1981	9.47240262703569
1982	9.462131551803987
1983	9.750773138931992
1984	9.292404827570893
1985	9.45820684130777
1986	7.993982492154475
1987	8.215453699579925
1988	8.515344075160497
1989	7.054543405092762
1990	6.963862970828393
1991	5.927024201310173
1992	7.445625917121275
1993	8.086049195358243
1994	7.05420889762729
1995	7.9127851683343975
1996	7.962290286285969
1997	8.140477150099736
1998	7.784522388921003
1999	7.953734595486754
2000	8.554554088923977
2001	9.038854879803084
2002	9.809476750582567
2003	10.574622427998689
2004	11.269765788716379
2005	11.973669183092433
2006	12.87450202258727
2007	14.563285359098677
2008	15.866464610334452
2009	16.45870914783321
2010	17.25345177427404
2011	18.23799970795648
2012	18.69435575498188
2013	18.9790501297303
2014	19.49956165509885
2015	18.520108953581218
2016	18.603093860580994
2017	19.476796817327394
2018	20.11102460326687
2019	20.067858656147564
2020	19.302485706642827