Year	% of total merchandise exports
1960	22.187391152908393
1961	23.367198838896954
1962	19.80913823019086
1963	18.805250468791858
1964	18.345679012345677
1965	18.193130910900944
1966	21.377231625318803
1967	17.257248044178557
1968	15.651030249890399
1969	12.52724957371954
1970	13.466071729247348
1971	11.713375053445786
1972	13.678185901615592
1973	11.405889438776251
1974	6.949693957521105
1975	8.22701051917204
1976	7.865060944190352
1977	9.10206766220773
1978	8.767784324868643
1979	9.184982501288665
1980	9.920257081647227
1981	6.602901417383779
1982	7.443153826060793
1983	7.471981705188186
1984	7.4678933515539665
1985	5.780425388314476
1986	6.982344695952998
1987	8.142023960753212
1988	9.935415310238508
1989	11.436241226924441
1990	12.738532262020513
1991	14.64200421654874
1992	16.654231771999623
1993	12.376606938046315
1994	19.95115118463601
1995	21.203600187364803
1996	4.750748708660438
1997	3.123370261765085
1998	6.07772551578152
1999	2.356572281028542
2000	2.134646720647982
2001	4.1456586911996105
2002	3.359744044599592
2003	1.4927692059527127
2004	0.5510294316221855
2005	0.8994251036323213
2006	0.6994155493540781
2007	0.7298274997503669
2008	1.699274109112761
2009	1.1133824703474025
2010	1.2792052971589745
2011	0.8700232009118682
2012	0.15121488533039676
2013	0.5829736174225709
2014	0.2651663513084378
2015	0.5487631036199727
2016	4.325915277281764
2017	4.383050733612396
2018	3.576148187989798
2019	0.564952168017991
2020	1.7791382484981462