Year	% of total merchandise exports
1960	1.0714994377935048
1961	0.8431703204047217
1962	5.748316934230968
1963	3.127715030408341
1964	3.8793103448275863
1965	5.381003972553269
1966	5.376690276883451
1967	5.630896226415095
1968	4.733727810650888
1969	4.317830638316394
1970	4.696794624898361
1971	4.79185119574845
1972	6.705873649948217
1973	8.757885931382232
1974	10.443614539278972
1975	14.216804365823577
1976	8.836302997355096
1977	8.264880576266902
1978	7.147260303706469
1979	9.650730523045716
1980	11.231567048364745
1981	13.617545081772557
1982	16.150702865681904
1983	16.46631335545119
1984	11.2651814307392
1985	11.582859317461011
1986	12.032194995428036
1987	14.014784344402326
1988	15.781615261490984
1989	18.93473611438515
1990	29.99614769251659
1991	29.596530268772558
1992	30.290990290836444
1993	24.50769231178479
1994	24.50749605396984
1995	21.32323216588684
1996	18.938477003871252
1997	24.384378609971407
1998	25.07866273061714
1999	24.901163569849107
2000	30.013473336491387
2001	29.421469374487025
2002	29.10941679609701
2003	23.446979504778714
2004	25.963165146183243
2005	28.767869313843054
2006	28.36506630313477
2007	30.04144339428634
2008	30.559448233871688
2009	28.625633121210264
2010	30.405280465696848
2011	29.40171489735584
2012	33.375465669094446
2013	43.16487748096552
2014	32.153282304920275
2015	27.70846683574052
2016	24.005619809858377
2017	22.328738364933436
2018	23.39048079484219
2019	21.67335810098288
2020	21.599013922008005