Year	% of total merchandise exports
1960	14.006832601268911
1961	11.535008976660682
1962	12.993671204461945
1963	19.17207816004339
1964	16.36050688314127
1965	17.047679255553565
1966	17.684116628275852
1967	16.65550193391724
1968	21.392416883599722
1969	15.025556106046809
1970	15.510315900744743
1971	12.151018687980573
1972	12.86932410770343
1973	12.432249579095215
1974	14.471956614486055
1975	23.934108597317845
1976	16.043247384831492
1977	15.865467774899972
1978	21.061204967427262
1979	22.337588145488716
1980	24.66878738623618
1981	17.890286897216438
1982	12.624504395597588
1983	17.06210283629241
1984	17.317260698540753
1985	18.7513921235864
1986	22.69038584761069
1987	20.58323696770318
1988	20.230583951867626
1989	25.993678675210298
1990	19.567910544427054
1991	19.876701350187147
1992	15.099868313011743
1993	10.059245950409192
1994	14.969346379972533
1995	13.260800071025747
1996	28.729210126094223
1997	21.87255077610372
1998	2.9200030189856503
1999	3.1297466211560923
2000	6.29912709216849
2001	5.5254121219010885
2002	5.485747062737805
2003	4.393569919189356
2004	4.371650115824338
2005	9.602502969524176
2006	8.245941630583976
2007	9.135300425366227
2008	7.362727620775095
2009	8.562974236593844
2010	8.468702451243665
2011	6.203841426900122
2012	5.284352485019276
2013	6.305744862465031
2014	7.392699695471437
2015	5.552678411094665
2016	5.357320957147165
2017	2.6114511082501806
2018	4.155003391594154
2019	0.8260968653265754
2020	0.7363773550153433