Year	% of total merchandise exports
1960	4.211245162758934
1961	3.429680759275237
1962	3.534260690365791
1963	3.613445378151261
1964	3.5297776395583886
1965	4.391023414159661
1966	4.090005769600615
1967	4.274686023735454
1968	5.091397294226995
1969	4.832939894679498
1970	4.030139899225491
1971	3.137185949283007
1972	4.307757138625683
1973	7.954164683585637
1974	5.387653486681883
1975	5.288122467606101
1976	6.3527869382517395
1977	5.3121619838327465
1978	4.128680997686349
1979	3.828863948257757
1980	3.2769687594459556
1981	2.5201605709677897
1982	3.1496332384497485
1983	2.0146021945012307
1984	1.6036150774667
1985	2.9154238045434466
1986	3.3433881472380143
1987	1.050643882825168
1988	1.3495555476224477
1989	1.1239236828770118
1990	1.0233672101944904
1991	1.8467086284792409
1992	1.6522103647953021
1993	0.882660739033567
1994	0.8606282752905083
1995	0.4494648103169562
1996	0.4361118349191153
1997	0.5071427046110877
1998	0.43710855118297015
1999	0.31188516616790474
2000	0.38097141287154734
2001	0.4728246483422664
2002	0.48877492440668757
2003	0.5855126083464769
2004	0.3691542938143646
2005	0.48821779628344514
2006	6.8269571986634565
2007	0.6488517535948144
2008	0.620621300156028
2009	0.6550578816215383
2010	0.8568831880553154
2011	0.5919690833099405
2012	0.6445703432985977
2013	0.9513912657431557
2014	1.1824350202028764
2015	1.554868244950106
2016	2.025684816921662
2017	0.9860307746780902
2018	1.393459160849474
2019	1.2216802143405914
2020	1.4142580154447242