Year	% of total merchandise exports
1960	0.06486887220832174
1961	0.09334163036714374
1962	0.06574621959237344
1963	0.08795074758135445
1964	0.08514865536081744
1965	0.06702412868632708
1966	0.1883357398455647
1967	0.12974597104616223
1968	0.1611308455707328
1969	0.16017880424660086
1970	0.1196037280256358
1971	0.1178269266139415
1972	0.024735637870261576
1973	0.07772528091262944
1974	0.11194219712003256
1975	0.06112944243869325
1976	0.2461865348223703
1977	0.18703230863692905
1978	0.3607034733135667
1979	0.3020722489208504
1980	0.10990804858384351
1981	0.07002701510942268
1982	0.05903482004874964
1983	0.4185969345431805
1984	0.34277326886548093
1985	1.528933248372747
1986	1.3205115668815464
1987	0.782538556965568
1988	0.9657912450542054
1989	1.8758924123343406
1990	1.458766629884529
1991	0.9887405570637081
1992	1.1700060909109347
1993	1.847477036669256
1994	0.5678078873401803
1995	1.2091696589428798
1996	1.3379439009191818
1997	1.7039118614167503
1998	1.2440485458460457
1999	1.0855108645800644
2000	0.7361236641085354
2001	0.8260657475369116
2002	1.0334853718949055
2003	1.392089921973507
2004	1.945801412903541
2005	2.6824287274774687
2006	2.8057573015179593
2007	2.156878977659196
2008	2.4720430717552535
2009	2.072044099544119
2010	1.5288269054976638
2011	1.9653417916327385
2012	1.6511695753259144
2013	2.0614681812218527
2014	1.9425649064343706
2015	1.8183290571562674
2016	1.9838926068770162
2017	2.176340131442126
2018	2.255600020168802
2019	2.0795221259302483
2020	2.4453426062696337