Year	% of total merchandise exports
1960	0.276009542912993
1961	0.3538809073552423
1962	0.40690117501043466
1963	0.3904222111195906
1964	0.39145876404358315
1965	0.41805413409286235
1966	0.32007931796720607
1967	0.36988567917194193
1968	0.41323583667109126
1969	0.360780464039275
1970	0.422827231016517
1971	0.48321720324423195
1972	0.3149847276897708
1973	0.566033840343077
1974	0.6423198002159853
1975	0.8779828439922452
1976	0.5371579510430503
1977	0.7272847820097852
1978	1.1424101805155256
1979	1.1233541941440865
1980	1.3205091729308298
1981	1.871080505741736
1982	1.4108675956132348
1983	1.3011110063831601
1984	1.5528817501562129
1985	1.96930485893114
1986	0.9602162887723616
1987	0.9721773946531854
1988	0.8685999578104632
1989	0.7611274580881175
1990	0.7577044568715338
1991	0.6744267055410784
1992	0.9273802876091543
1993	0.6296920269823479
1994	0.7195290557650227
1995	0.6636625095273374
1996	0.651299128159468
1997	0.5754239322195784
1998	0.5297894668494775
1999	0.44922221262297457
2000	0.39828224016387437
2001	0.582082736331315
2002	0.6547352839013918
2003	0.6501061696712322
2004	0.7463659373563755
2005	1.000655999829625
2006	1.0965003321031719
2007	1.175054611253449
2008	1.199751435497942
2009	1.164695251109753
2010	0.9501755010313054
2011	1.050307196323803
2012	1.0656846004571618
2013	1.02926187328562
2014	0.9794318141382498
2015	0.8565498901849126
2016	0.8359324210260404
2017	0.7965459641307291
2018	0.7364607122745346
2019	0.7023630536055991
2020	0.7148719105341613