Year	% of total merchandise exports
1961	3.3844189016602813
1978	1.1937576423286564
1979	0.6670503682059001
1980	0.6372938167063598
1981	2.329371879889725
1982	2.233443564727783
1983	1.55159459386061
1984	1.430603061031275
1985	1.0037177441782175
1986	1.3466253072467187
1987	2.5399118138969135
1988	2.9341166596726818
1989	0.8112498337944072
1990	1.4783765406411071
1991	0.8028112939141645
1992	0.9476935990419121
1993	1.091036566917031
1994	0.9254070691024623
1995	1.1730861926596265
1996	1.209333633230354
1997	1.2429421122548832
1998	1.588864701304497
1999	1.3710422908031352
2000	1.3910260730044124
2001	1.6100823731876588
2002	1.4937157522156492
2003	1.669060433295325
2004	1.632855206545304
2005	1.7207162517809866
2006	1.9284044271303629
2007	2.1394135470467965
2008	2.5194562136513468
2009	2.738001247868225
2010	2.7495540227059627
2011	2.909214939345436
2012	3.0771462263120157
2013	3.1261812946359915
2014	3.4071350129309246
2015	3.505981152051707
2016	3.16053936412695
2017	3.082330074646176
2018	3.043665194516517
2019	3.320638601588922
2020	3.2450544464630755