Year	% of total merchandise exports
1960	5.828911400546712
1961	5.824354120730541
1962	4.883090633469613
1963	5.3196487297170325
1964	4.029317125491598
1965	4.160241530994854
1966	3.5333631278863473
1967	3.356007065026446
1968	3.0688423644074567
1969	3.477559868884281
1970	3.342630725907578
1971	3.2176696379611562
1972	3.140124535879914
1973	2.722840573013946
1974	1.639623860284531
1975	2.139831155737955
1976	1.4324816928767865
1977	1.625499991259807
1978	1.6623802499151141
1979	1.607373541597399
1980	1.5482026900714214
1981	2.617639047951641
1982	2.6618313674083094
1983	2.8365227713526866
1984	2.836035493699939
1985	2.775316296509959
1986	3.216164433126751
1987	2.958073406366019
1988	3.0811605583717827
1989	3.5977290450432298
1990	3.9188785361287803
1991	4.032073526752692
1992	3.9000041531466687
1993	3.72448714547693
1994	3.425856272114248
1995	3.408263877502582
1996	2.8762822712355995
1997	2.9193423604142725
1998	3.4971855832779895
1999	2.8262455708081142
2000	3.4831831687869084
2001	4.199923353232693
2002	4.688972133200463
2003	4.573307695332293
2004	5.054507936724518
2005	4.1246316062136925
2006	4.122603437119615
2007	5.236604831620115
2008	6.15167026357069
2009	7.545442806227172
2010	6.758779389337004
2011	4.037619205869216
2012	4.078584286409546
2013	4.170292450265521
2014	4.1572493789473395
2015	4.427408274093001
2016	4.363523689960689
2017	4.645919769331747
2018	3.7149529357719175
2019	4.09277419346267
2020	4.502363410264838