Year	% of total merchandise exports
1963	0.7142857142857143
1965	3.389830508474576
1966	0.7017543859649122
1967	2.6887661141804786
1968	2.439024390243903
1969	2.7443805541035022
1970	3.554748313440581
1971	2.54932387497229
1972	1.1614055985705778
1973	1.9904539453640704
1974	0.9107876073161628
1975	1.1505331004156376
1976	1.2799790310602421
1977	3.259664680615214
1978	0.9256285222063245
1979	0.5420820665111127
1980	0.4117683391324041
1981	1.210072070468903
1982	1.058548693239889
1983	1.700886222271151
1984	0.3625301052097858
1985	0.22788740859461085
1986	0.463529647837865
1987	0.45481608891241065
1988	0.508821969642678
1989	0.27537695050089295
1990	0.8864188358305188
1991	1.5891238645189407
1992	1.2120368494618823
1993	0.9533804922957152
1994	2.1745044840622403
1995	0.6092457086308043
1996	0.2026417615677947
1997	0.20873666084103437
1998	0.17754923830199273
1999	0.2378626605744811
2000	0.4636541646523237
2001	0.7232271013245912
2002	0.730978908689574
2003	0.8489147102309172
2004	0.8736410347620336
2005	1.8625896896741434
2006	1.6199835911113083
2007	1.53835068185535
2008	1.9958152615629772
2009	1.4572016185856063
2010	1.6004054693082168
2011	1.341666391940348
2012	1.613353345736212
2013	2.144788615898562
2014	2.5926692624101353
2015	3.141968502960603
2016	2.013535400904946
2017	2.0489367633242077
2018	2.17414895697178
2019	4.479450107492339
2020	5.998918885904682