Year	% of total merchandise exports
1960	0.5367686527106817
1961	0.509915014164306
1962	0.37776578521316784
1963	0.4745951982132886
1964	0.4944054124381993
1965	0.6125949522175937
1966	0.7676997441000852
1967	0.9204275534441805
1968	0.8454106280193237
1969	1.1186859878872435
1970	0.7917283184573529
1971	0.5938425468904245
1974	0.4600545833542259
1975	0.014915717212378249
1976	0.0046455355393567755
1977	0.012380575680690483
1978	1.509412950789181
1979	1.9834697224369278
1980	1.508489403042385
1981	2.374689256706927
1982	1.3209694872108875
1983	0.5333353578566371
1984	0.6327112334629916
1985	0.9614236754829453
1986	0.8625123639960436
1987	0.9306407683163924
1988	1.1804471239737637
1989	1.4791238052476432
1990	1.2299116627509552
1991	1.2719975676747965
1992	1.1907860113006115
1993	1.0307219103423093
1994	0.9065332916536417
1995	0.8418837148118916
1996	0.9293225727561751
1997	1.0153380859796932
1998	1.052377031765055
1999	1.1336534889128287
2000	1.0247576115720394
2001	1.0398517314497047
2002	1.1818259582846387
2003	1.167722168886607
2004	1.1277150737951123
2005	1.2870986432865141
2006	1.2150603545211913
2007	1.2807419898251857
2008	1.355096839335918
2009	1.379941075209522
2010	1.3260724058091073
2011	1.6123903437646403
2012	1.884157799505421
2013	2.0275200611834063
2014	2.0557724834542697
2015	2.093759445917643
2016	2.4936670980298214
2017	2.806278941783585
2018	2.8828307157919832
2019	2.7260231800558237
2020	2.9834216619619194