Year	% of total merchandise exports
1960	7.851093860268173
1961	5.368573198430725
1962	4.903381642512077
1963	6.7101226993865035
1964	6.394052044609666
1965	4.857898215465962
1966	7.179402541673544
1967	6.424285210024709
1968	8.035165666209764
1969	5.866795548216467
1970	6.085617811816759
1971	7.078033035883805
1972	6.811269312329597
1973	3.8678700040012446
1974	2.692114912812937
1975	0.023505780285061006
1976	0.9949333315809189
1977	0.3371674422688559
1978	1.8196156990064358
1979	0.4723698944370155
1980	0.09028619080919409
1981	0.35018251562209984
1982	0.15352711724792226
1983	0.18632342511602443
1984	1.0340928995684644
1985	0.1615764640214913
1986	0.13398751376896248
1987	2.4694139614883928
1988	1.0576548518566378
1989	1.4185528185131033
1990	0.4123489617200135
1991	1.4591554791976886
1992	0.8124779298141038
1993	1.7668190167870845
1994	3.2371449069471336
1995	2.5720332127087633
1996	0.9731068817387648
1997	1.930942703823298
1998	1.6340041674665147
1999	4.047223392139781
2000	3.616552290932973
2001	6.669315950046021
2002	9.867717636285118
2003	8.531627789577044
2004	6.074694413606769
2005	5.770601433804435
2006	10.74349705882234
2007	11.802349163173593
2008	7.1455335782072975
2009	7.032685477517813
2010	5.650346063903159
2011	8.076732321779332
2012	7.815996404777173
2013	8.115275790111085
2014	8.106372452585706
2015	5.114073015934812
2016	4.10870639722577
2017	4.249300304907484
2018	5.9430359604752026
2019	6.118064175221113
2020	5.850832546781478