Year	% of merchandise exports
1978	2.870194985061986
1979	3.086831997884077
1991	1.6786596304728107
1992	2.4360866611735648
1993	4.849607886740702
1999	2.4398708578463495
2000	1.8190549257034807
2001	2.0345247844243657
2002	1.9990363181276463
2003	1.9533729813294263
2004	1.9506673784769544
2005	2.7435318449424067
2006	1.725269836735017
2007	1.8029042460185554
2008	1.7763372972556926
2009	2.4546450310560846
2010	2.2896093269130002
2011	2.1307550041312813
2012	2.3641224447801155
2013	2.284931160670512
2014	2.528566593269171
2015	3.424832992309804
2016	3.4167397746199186
2017	3.474686938097675
2018	4.375005470997415
2019	3.703963213123701
2020	4.101941100433199
2021	3.4993741397927804