Year	% of merchandise exports
1970	83.81289226899018
1971	84.78828080031407
1972	84.87335983759644
1973	78.34393812590602
1974	88.47063483073592
1975	88.02280920296364
1976	85.81703296080873
1977	88.52361990120306
1978	87.71229292756098
1979	88.00052654949843
1980	88.90561514095876
1981	87.35563832495656
1982	82.44812385278826
1983	86.94231444786156
1984	85.28741123609058
1985	83.60504170040988
1986	80.82629031512943
1987	78.77717484596508
2002	38.225457843916175
2003	38.147138272829764
2004	36.35011076978232
2005	46.85712596221772
2006	50.09609681860452
2007	54.952314968253134
2008	59.63091957665864
2009	58.038368766344576
2010	50.973274632994666
2011	50.08177980799557
2012	50.156980104150534
2013	49.33746168761003
2014	54.19804293237371
2015	45.39408642094124
2016	47.75830956581779
2017	52.53303374829576
2018	47.80796508934873