Year	% of total merchandise exports
1960	14.749661705006767
1961	10.50531914893617
1962	10.75
1963	12.458286985539488
1964	10.104861773117255
1965	6.660899653979238
1966	5.063291139240507
1967	6.138613861386139
1968	5.899143672692674
1969	4.641555285540705
1970	4.1188309201574205
1971	5.8324842386805065
1972	7.1115507989327575
1973	6.850598646538261
1974	7.933651279282522
1975	6.5584972957657275
1976	7.015376509080292
1977	18.261739582425704
1978	17.757980261288015
1979	15.029468842950092
1980	19.087565806202498
1981	20.87723010020316
1982	13.541584568095837
1983	17.75140311395984
1984	17.79607012634817
1985	19.88358804616214
1986	19.883588041554955
1987	15.602854098382767
1988	15.691942565563071
1989	16.37580051897219
1990	9.956593711016767
1991	8.663780546721323
1992	6.243790592551296
1993	6.84048775651829
1994	4.989087709658701
1995	4.485935820681671
1996	8.582307560721667
1997	3.643806469270737
1998	4.843596619414296
1999	9.48855159326162
2000	0.019556774883939077
2001	0.9647454956135585
2002	1.1396600425262668
2003	0.5778093355360745
2004	4.40978444220997
2005	0.5401504948762678
2006	2.117834019234272
2007	0.5440630189103149
2008	0.7999463624802265
2009	1.0895404952187522
2010	0.9154562248518804
2011	0.9838651517953598
2012	0.7652072548045994
2013	0.5589819639623408
2014	0.5280612222675852
2015	0.5416320639432408
2016	0.49744115700186264
2017	0.5129937236084443
2018	0.603566412603227
2019	0.6124306712449412
2020	0.6402573550306315