Year	% of total merchandise exports
1960	3.8994680110893465
1961	4.415740167310546
1962	4.733194479969793
1963	3.2425520753644728
1964	3.241792897690298
1965	3.6934870086123706
1966	4.898888237742162
1967	8.248366678052077
1968	4.39835842492092
1969	4.463613659482935
1970	3.0017651655264297
1971	2.5316293782593515
1972	2.635926772764204
1973	2.719429231416306
1974	4.167758861960721
1975	5.469631665624855
1976	6.113218723691009
1977	6.11260867158532
1978	5.683005393300312
1979	5.520000117565627
1980	7.154932250823983
1981	11.214434269818923
1982	11.864162800582799
1983	9.976829950353084
1984	8.528850898274149
1985	8.5275406405019
1986	6.496435207927477
1987	5.8276731327600295
1988	6.5424966297526
1989	5.116716060145291
1990	4.4091376224606265
1991	4.1190396072199
1992	4.543318503314598
1993	2.545553160999218
1994	2.1689602666724546
1995	2.2300242034916584
1996	1.9247002734411243
1997	1.6170737613146098
1998	1.3004352009824076
1999	1.10067072645038
2000	1.0179201060378609
2001	1.0274210984684808
2002	0.9625053679121821
2003	0.8131200499296544
2004	0.7987529971798499
2005	0.9906956858383662
2006	0.9025992260289408
2007	0.8880544100923614
2008	1.027571495022612
2009	1.1993031347216088
2010	1.0306116880491398
2011	0.9525727608680338
2012	1.231020879508972
2013	1.3363186409278467
2014	1.4274048694361692
2015	1.348626885554428
2016	1.3045550864680047
2017	1.1389158123487604
2018	1.09687938316833
2019	1.080332521486705
2020	0.9619954819896859