Year	% of total merchandise exports
1960	6.369060773480663
1961	6.3944817300522
1962	5.5643879173290935
1963	6.0519091589717995
1964	4.607918389580806
1965	4.713590245234087
1966	3.962214641826292
1967	3.585965223126178
1968	3.618675039892932
1969	4.5268478189664005
1970	4.499400427521246
1971	4.501608172232982
1972	4.913173993996276
1973	4.594228476439142
1974	3.3833241339905085
1975	2.1967314309618735
1976	1.6615123203757667
1977	1.6311472177687332
1978	1.937017448424979
1979	1.4125028798761556
1980	1.101199341537979
1981	3.0625507260887344
1982	3.1153941402780245
1983	3.028280619290612
1984	3.312752123790759
1985	3.029174246201202
1986	3.496078911543595
1987	3.565065949597762
1988	3.817030170470084
1989	4.178225692254712
1990	3.961343002773829
1991	4.63219120152349
1992	4.57626631352288
1993	4.965252785371317
1994	5.623515973909232
1995	6.065194853844253
1996	4.370896501655395
1997	4.271774468184351
1998	4.889117580005388
1999	3.236073133097464
2000	4.42488723668787
2001	5.6752621034167285
2002	6.339073411611565
2003	5.8705599555114105
2004	6.807163458696032
2005	4.06146748203214
2006	4.098035032001113
2007	6.86917293950029
2008	9.518150835386084
2009	11.241214609062409
2010	8.271411096320492
2011	4.797227197076867
2012	4.526891148157466
2013	5.241643049951875
2014	5.122640069246088
2015	5.532820793338933
2016	4.232959402975507
2017	3.5543637091158686
2018	3.2122143458925083
2019	4.482486143775749
2020	5.5726215542834385