Year	% of total merchandise exports
1960	1.6078437945969006
1961	1.4559934468977154
1962	1.2643374807528411
1963	1.1486358656267328
1964	1.207938409698544
1965	1.2917700875158178
1966	1.148284748924471
1967	1.020929292273826
1968	0.8173549881591752
1969	0.688728075950225
1970	0.5857544185599416
1971	0.5728758455124274
1972	0.5385435549524934
1973	0.5187794769566255
1974	0.5593355895242006
1975	0.6630381631230976
1976	0.5391050240565692
1977	0.5454941085081526
1978	0.6273511550652029
1979	0.5965842019611524
1980	0.6118669115301988
1981	0.7264143516502162
1982	0.6956043677037029
1983	0.6796736313529042
1984	0.7173639845059533
1985	0.7760728475151891
1986	0.8339307843787789
1987	0.7779999685366985
1988	0.6955027688878247
1989	0.6706979687162958
1990	0.5706102031578625
1991	0.5225729108983466
1992	0.5299307562260779
1993	0.6138202340649195
1994	0.6163407233068704
1995	0.6463806317656859
1996	0.6498691838992684
1997	0.6530441889944567
1998	0.5494432548032441
1999	0.5839978094299638
2000	0.5780036411753149
2001	0.5336791337402389
2002	0.5937196813331388
2003	0.5856041865375894
2004	0.6698515892953267
2005	0.7608944245459591
2006	0.7978621543175931
2007	0.8575773396773875
2008	0.8699851346986593
2009	0.9797363907775626
2010	1.0262284446580967
2011	1.0334348087023313
2012	0.9738544217382076
2013	0.884714707979817
2014	0.8941139320558903
2015	0.9292445591302714
2016	0.9437711424613695
2017	0.9841560811791956
2018	0.988729892423181
2019	0.9198634878884216
2020	0.8351190989945599