Year	% of total merchandise exports
1962	0.006990074094785405
1963	0.061773466813440425
1964	0.131701013412958
1965	0.6237390034562182
1966	0.8284580632765692
1967	0.49319261237264733
1968	0.7384542947853766
1969	0.9476911706516945
1970	0.7652080502432325
1971	0.839827799229202
1972	0.5842395852197191
1973	0.19396133798423895
1974	0.10670795335885223
1975	0.5706560506003555
1976	0.7314210167355917
1977	1.4141011637524947
1978	1.671059143468487
1979	1.5933344649723284
1980	4.03822588842009
1981	2.8955588976313393
1982	1.914082172098405
1983	0.8006944900823485
1984	0.5120506050119302
1985	2.5484130558485543
1986	0.8010326201361402
1987	0.8413088864871372
1988	1.3920642227993316
1989	0.8750451766180797
1990	0.2902643886089413
1991	1.1776016165460892
1992	0.36229631904512005
1993	1.2769126552849839
1994	2.2075442745508695
1995	1.8652207954943365
1996	1.4915016614546135
1997	2.3313172337434382
1998	2.9890899491552214
1999	4.221678521993597
2000	2.6318010033851684
2001	3.5330054228106276
2002	4.479659050386068
2003	3.9423603798888354
2004	6.550174381467253
2005	4.228147331822246
2006	4.99613148694055
2007	3.961076196730674
2008	5.499697865731505
2009	5.93298680246503
2010	5.477028921620682
2011	5.204668843427045
2012	5.092405999828573
2013	6.77250750209218
2014	6.956594354629147
2015	4.9706945860860685
2016	2.502175126993226
2017	1.857061041416103
2018	2.138617521023113
2019	1.6665698303524945
2020	1.5574965717361342