Year	% of total merchandise exports
1960	1.609952433223564
1961	1.2843333859083843
1962	1.3420713430305535
1963	0.9458221263263678
1964	0.7466959880620033
1965	0.7606061583666796
1966	0.8228067202427272
1967	0.8273389621400052
1968	0.5843957807646896
1969	0.6817596547410298
1970	0.7211772690248921
1971	0.9194334848729259
1972	0.7996688327360797
1973	1.168744238512328
1974	1.4193037065536847
1975	1.9179955555813861
1976	1.6409441513984921
1977	2.199626710990945
1978	0.7797272723227693
1979	0.7329409416241655
1980	0.8035814774435688
1981	1.3744715045662053
1982	1.2826998588305423
1983	1.0612226580778674
1984	1.173786412223089
1985	0.662346241270014
1986	0.5869180006711859
1987	0.657580860898025
1988	0.4699394568252627
1989	0.5331084002899859
1990	0.6761650610261589
1991	0.6827159047417496
1992	0.6972560352100733
1993	0.9233877036960745
1994	1.0269324578756185
1995	0.8738354311204871
1996	1.3389061347676912
1997	1.2349939088960207
1998	1.2332734986932048
1999	1.1989011830007414
2000	0.7905380143015068
2001	1.0030420961763362
2002	0.814447949368357
2003	0.8423134804445586
2004	0.7030995092138771
2005	0.9553675829860667
2006	1.1909864142320463
2007	1.0365266064345937
2008	1.0056713457183901
2009	1.1247753990526965
2010	0.7646744934559229
2011	0.6952575542702644
2012	0.7139519160892174
2013	0.6226745175795466
2014	0.6653291834866139
2015	0.9515828669840262
2016	0.9531285213127026
2017	0.9971028935419225
2018	0.8966318796606566
2019	1.1699934145242616
2020	1.2592764918806947