Year	% of total merchandise exports
1960	7.37686034188822
1961	7.044236533745117
1968	1.754675261402391
1969	2.2092761273294923
1970	2.3576298579050112
1971	2.3912337662337664
1972	2.2638368705784435
1973	1.9884600696930643
1974	3.141114253465397
1975	3.2007894661146894
1976	4.365404755912416
1977	4.529903232285432
1978	5.10309781462229
1979	5.304858521135462
1980	4.564972091065904
1981	6.606515475628805
1982	7.275916513857481
1983	7.1822975859822185
1984	6.574980676587964
1985	5.916761484686305
1986	4.136710287231812
1987	2.8937853521215198
1988	3.7817040144087897
1989	3.264562327319351
1990	2.4101776634849954
1991	2.104978137911669
1992	1.6480238627889634
1993	1.9016713772287936
1994	1.3563036004382485
1995	2.178611970703034
1996	1.6259683876165978
1997	1.0573698137271637
1998	1.0281861288176528
1999	0.6771783195730177
2000	0.5992507459757809
2001	0.6689899182227164
2002	1.0610754407383345
2003	1.850657296162716
2004	1.865291533276983
2005	2.1452916994866693
2006	1.9535141007750099
2007	1.9836465972987598
2008	2.0351291652109955
2009	1.8370488978159711
2010	1.6690967585423166
2011	2.6220936739746032
2012	2.1935537846759714
2013	1.9303544403411996
2014	1.246256072029072
2015	1.316793214268978
2016	1.0808607070320548
2017	0.9533064829622341
2018	0.855537065370798
2019	0.9285003021074825
2020	0.8973858192517725