Year	% of total merchandise exports
1960	0.8584609785598836
1961	0.47971531648431587
1962	0.12423722000950048
1963	0.29288977290113877
1964	0.32037483856111654
1965	0.5398663534895577
1966	0.3244409339142695
1967	0.3822591077229421
1968	0.2879578332070675
1969	0.33855815169294823
1970	0.11271200256342509
1971	0.09670128385024604
1972	0.07158412342673501
1973	0.1102310921408792
1974	0.17905191805061674
1975	0.31606839906837775
1976	0.3300072957561886
1977	0.5350598398085955
1978	0.4662468529738828
1979	0.4024565337832178
1980	0.5963857385949877
1981	0.7638413559276106
1982	0.7254170192030128
1983	0.7630423568403913
1984	0.5926722494817871
1985	0.7098183996171699
1986	0.6936742040911723
1987	0.7129210464026111
1988	0.5958978859746447
1989	0.4481352204698228
1990	0.5179237448395873
1991	0.5042538808103579
1992	0.600511296261268
1993	0.6113107931244184
1994	0.6509840401910496
1995	0.5833925777647141
1996	0.8491664084613046
1997	0.42127529863491103
1998	0.5175969260822417
1999	0.49737948182842345
2000	0.5169892860607271
2001	0.46076012215753953
2002	0.4198767494354969
2003	0.33451551626806564
2004	0.4058228729875893
2005	0.5190363298008478
2006	0.5091204110170708
2007	0.5198722208847403
2008	0.4840338592519772
2009	0.5811491806632122
2010	0.6542405395120079
2011	0.7337011448873727
2012	0.71473333606091
2013	0.6408307914804084
2014	0.5613750150279305
2015	0.5823798045165882
2016	0.5483537187061146
2017	0.5455782239127833
2018	0.49365405465673484
2019	0.5698922090628225
2020	0.5704468391066906