Year	% of total merchandise exports
1960	3.2286677310626217
1961	3.4580414368758383
1962	3.668744434550312
1963	2.5115465431920296
1964	1.8551641372463223
1965	1.862621516835692
1966	2.332662213063854
1967	2.374071637814308
1968	3.018480841471076
1969	3.5610190013065806
1970	4.215324562484195
1971	4.685026376374496
1972	4.344868545751088
1973	4.58919075972744
1974	5.532580459207715
1975	7.635324467413161
1976	4.334634512249135
1977	3.9738656335687335
1978	4.070949992023148
1979	5.600827272505277
1980	7.67479932862905
1981	7.331453475248197
1982	7.224374423452192
1983	4.990307400684824
1984	4.0653015007744475
1985	5.368008299965643
1986	2.683477343445674
1987	3.638796577087388
1988	4.068176180876287
1989	4.392966520837274
1990	6.643409985823825
1991	7.555673821671606
1992	8.623905297030605
1993	8.405670573803361
1994	11.271590759190985
1995	13.974850700458768
1996	14.379235844177702
1997	16.130484124989547
1998	17.39679419514922
1999	17.052527380670213
2000	16.38128164375668
2001	18.274598015016565
2002	16.172953573203188
2003	24.620294804470753
2004	20.427777556526152
2005	27.247536667374455
2006	25.733572616656097
2007	24.986367143196965
2008	29.450695500665034
2009	24.016283524090102
2010	29.354866914562617
2011	27.59650506150388
2012	23.985360014119053
2013	34.77224753340902
2014	32.454857749658686
2015	30.39823692024038
2016	24.8845247619845
2017	25.309453108068997
2018	30.461254779213697
2019	18.700133093879565
2020	24.602231602297607