Year	% of total merchandise exports
1960	2.58644925499016
1961	2.6167214885365015
1962	1.9765352499735755
1963	2.132981973724412
1964	2.081003166401487
1965	2.110122399475254
1966	2.035682089771274
1967	1.682704121249054
1968	2.0658043450960695
1969	2.0418968398759936
1970	1.7425113687920064
1971	1.9244950372523926
1972	2.0106668694500995
1973	2.2919042805636787
1974	3.9307085365655894
1975	6.626822717151618
1976	5.231998574144487
1977	5.385473895805201
1978	5.627549381234927
1979	4.169012707722384
1980	4.669932460921629
1981	5.043329043329043
1982	4.373699872876459
1983	4.234231169591041
1984	3.055833676894988
1985	2.605440296107384
1986	1.817237305905962
1987	1.2604649755583122
1988	1.1570157498735936
1989	0.9797804527534543
1990	1.1729617931103977
1991	1.3283317099163405
1992	1.3632602039180863
1993	0.9608312984846497
1994	0.7570561568079821
1995	0.5858348223148699
1996	0.6389215392976079
1997	0.7390836171147851
1998	0.8175939949056799
1999	0.6465778672423328
2000	0.4752324138781637
2001	0.636650666627016
2002	0.675040484936312
2003	0.702974998092881
2004	0.6673161561409773
2005	0.7253027590020995
2006	0.6982250294527812
2007	0.8037605398261434
2008	1.0214915472048427
2009	0.9827365619172095
2010	0.8603238188400996
2011	0.6345638261582078
2012	0.6239744551851945
2013	0.5975437242255599
2014	0.6508232942584391
2015	0.6315443217920585
2016	0.6368055889526509
2017	0.5479066462963043
2018	0.47931756834218453
2019	0.513118445025169
2020	0.45262911714331827