Year	% of total merchandise exports
1960	6.293624585041438
1961	6.255465805847985
1962	5.72614961386225
1963	5.030856061506557
1964	5.098595514347397
1965	4.620296923908534
1966	4.847789973680592
1967	4.619908126513364
1968	4.644234101373895
1969	4.397005334009056
1970	4.429821164088774
1971	4.2841907664670265
1972	4.122578684664575
1973	4.0494280589784255
1974	4.922195156263094
1975	4.790483915101508
1976	3.992552122621041
1977	3.7479825423424042
1978	3.7202645758381205
1979	3.9766937883922235
1980	4.45206273056712
1981	4.638748755934394
1982	3.59556110897862
1983	2.943005043862321
1984	3.033494305848364
1985	3.042199400738686
1986	2.8927948627251037
1987	2.753562739070264
1988	2.7505662191612728
1989	2.9408636987910546
1990	2.885712642371826
1991	3.2459164497661135
1992	3.639718532402283
1993	3.953220354291441
1994	4.226477276008617
1995	3.774143531218436
1996	4.035228399905758
1997	4.53029866086521
1998	4.866806596086855
1999	4.567511555972366
2000	4.848009989377785
2001	4.833139679587234
2002	4.361909871309821
2003	3.848725747729732
2004	3.778898914480327
2005	3.881369891250446
2006	4.004698622949503
2007	3.956575599364048
2008	4.203912016402268
2009	4.29481005685988
2010	4.739811303337477
2011	4.9080002375914615
2012	5.18064388872291
2013	5.246859624193641
2014	5.340078541476972
2015	5.479582263178758
2016	5.319844162742327
2017	5.251345314779863
2018	5.226814086368306
2019	5.2382703586515325
2020	4.7274696965675105