Year	% of total merchandise exports
1960	8.529997156667614
1961	6.409130816505707
1962	5.159420289855072
1963	3.7582128777923787
1964	2.372644801116539
1965	3.0564629024731684
1966	1.7490671641791042
1967	1.9357884796978282
1968	2.631578947368421
1969	3.7560833575974373
1970	4.221926578805139
1971	5.093801226397911
1972	4.7273695587475135
1973	4.423963133640553
1974	3.7503600463210613
1975	3.2065429053615473
1976	1.9547822776980357
1977	2.10330938132976
1978	1.9990134911747455
1979	2.037011140633012
1980	2.435717761152443
1981	3.569693707413777
1982	2.1923545684935486
1983	2.7329228907904106
1984	4.0505395185834185
1985	4.840343719203883
1986	3.670236090108476
1987	4.112286610622955
1988	4.76114194015018
1989	6.779705430733
1990	7.173751776809799
1991	7.915917561015175
1992	6.573531570168011
1993	8.824698186565463
1994	8.339337831876364
1995	6.762530293523857
1996	6.326602377618692
1997	5.477775756685465
1998	3.889101080829523
1999	2.3918569213998424
2000	2.9326802589520335
2001	3.4525977130625702
2002	3.0924547354738796
2003	2.6653245510245944
2004	2.6964595047579554
2005	2.5130129773095367
2006	2.7160444167959343
2007	2.656740307844902
2008	2.8843466052888718
2009	4.0828953636333996
2010	3.7855896920310363
2011	2.868939961878732
2012	3.9455743314015197
2013	3.2896021165327354
2014	2.8588889435863822
2015	3.593228074344472
2016	4.089483137656376
2017	2.491624201868806
2018	2.353940014303599
2019	2.9230634813565266
2020	4.0187565860188865