Year	% of total merchandise exports
1960	1.2652666725243826
1961	0.8855154965211892
1962	0.8840196448809974
1963	0.8500719819016933
1964	0.7294757665677547
1965	0.8736069888559109
1966	1.211098426564749
1967	1.181554871040412
1968	1.0089235469089155
1969	0.8039579468150896
1970	0.7598784194528876
1971	0.7702182284980745
1972	0.9139359174675199
1973	0.9232681324534667
1974	1.141255605381166
1975	1.5773991230504523
1976	1.383736677854325
1977	1.1171200189873953
1978	0.8567480746840238
1979	0.666391498465259
1980	0.7194166247426209
1981	0.7759947740634497
1982	0.8715666543836277
1983	0.987833601926789
1984	0.9774707609151483
1985	1.1071230463014325
1986	1.088940410418311
1987	1.2050283816342922
1988	1.0748406658003835
1989	0.9517687844398828
1990	1.2077580976119784
1991	1.2059470714454126
1992	1.1343775041147715
1993	4.033038837369323
1994	3.355623399595409
1995	3.529070108052109
1996	3.825664283187965
1997	4.339102216459527
1998	3.881487906636142
1999	2.933173687355292
2000	3.2722028785463877
2001	3.4634798382468226
2002	3.914169330991403
2003	4.22183535960692
2004	4.7863731925674005
2005	5.11184968499383
2006	5.805249722876029
2007	6.152421276442871
2008	6.646022868616614
2009	5.597024047527686
2010	6.039259797600128
2011	6.772398904982226
2012	7.000112404774304
2013	6.922572148408573
2014	5.792949497125571
2015	4.990065972432721
2016	4.938294817590455
2017	5.12166992625277
2018	4.9084919852743285
2019	5.014985391195171
2020	5.260239631333068