Year	% of total merchandise exports
1960	0.5617977528089888
1961	0.6122448979591837
1962	1.2173913043478262
1963	0.9787928221859705
1964	1.048951048951049
1965	0.583941605839416
1966	0.2557544757033248
1967	0.853658536585366
1968	1.1389521640091116
1969	0.8147627997273797
1970	1.2356558913972848
1971	1.645570715416627
1972	3.266239638845082
1973	1.7593755816117624
1974	1.1982777125396165
1975	2.635954876815836
1976	0.818561968655355
1977	0.12781333196029912
1978	0.2680595191957627
1979	0.37118246234628827
1980	0.4994272882096728
1981	0.7726477366489316
1982	0.8337789833299336
1983	0.9035516254194422
1984	0.4891952641846542
1985	0.36133466943129705
1986	0.43390557678361397
1987	0.5660915707563814
1988	0.6027240483295054
1989	0.5115969565524005
1990	0.5670361672379073
1991	0.8184084801065641
1992	4.23280322748178
1993	6.9019514848202554
1994	17.515361160500547
1995	24.348458115815443
1996	33.82325928510553
1997	29.240322469153064
1998	16.686914342487665
1999	12.502408883035871
2000	4.082866408757587
2001	5.273885919255058
2002	4.8767010201651
2003	5.070003022223993
2004	3.7548265457426906
2005	2.9980461140902723
2006	3.551549686454015
2007	4.63313073904632
2008	4.64051134355227
2009	4.078520606066773
2010	4.705064241499282
2011	3.5752670950380905
2012	3.884258748754809
2013	3.6567974304697106
2014	3.017334253518732
2015	1.7140215387048807
2016	2.650262120437409
2017	3.5855847746753136
2018	1.7139016020598339
2019	3.05697581576189
2020	3.8690378994436445