Year	% of total merchandise exports
1967	1.0828365878725592
1968	1.1383140766058624
1969	1.350334853926041
1970	1.0054578604474376
1971	1.0213244232143621
1972	0.7730937733035048
1973	0.9254513916265867
1974	0.7969106132716085
1975	0.5413933186963438
1976	0.6422349246634451
1977	0.6479236692663604
1978	0.4007656498918837
1979	0.45228770914921157
1980	0.34473366855107695
1981	0.4017565168644305
1982	0.299121734739975
1983	0.5615571548809036
1984	1.0278821485779976
1985	0.3551165406676918
1986	0.5063727696379545
1987	0.5185461525035369
1988	0.6149943397184712
1989	0.41506252700060614
1990	0.5378012692923878
1991	0.6696530731996801
1992	0.702513731640675
1993	1.040689872395172
1994	1.2574083657070447
1995	1.1920760128261545
1996	1.012327163460509
1997	1.1234219144659778
1998	1.1864478325608268
1999	1.0194803341735599
2000	1.2606575320123854
2001	1.0686960392805567
2002	0.9534735960923394
2003	0.8376991978584153
2004	1.0055744646710563
2005	0.9903992225461613
2006	1.1537492717177502
2007	1.326006929760344
2008	1.5291798471292886
2009	1.4710183139054496
2010	1.6542342373256587
2011	1.6321353915431756
2012	1.4831744053107137
2013	1.4283349587551226
2014	1.459779319442132
2015	1.5264049305354124
2016	1.7255749569725574
2017	1.7369232270000046
2018	1.5276193972469831
2019	1.5439876385948996
2020	1.5419375164024467