Year	% of merchandise exports
1963	37.59368412132084
1972	35.73324003370836
1973	34.91610648478692
1974	27.672036081958783
1975	27.674586240266606
1976	27.884859468620743
2000	13.340777355474842
2001	13.076638483996534
2002	12.885381732306838
2006	9.494279576250337
2007	8.231242646241617
2008	9.857267987858673
2009	10.299724566025857
2010	9.40966372943301
2011	7.922308004825297
2012	8.331063666545475
2013	8.932044168847861
2014	8.417251776333275
2015	10.549878401802017
2016	11.197735926924048
2017	14.76545940019854
2018	14.386315512117832
2019	12.654030037185073