Year	% of total merchandise exports
1960	3.2441988950276244
1961	1.901565995525727
1962	1.9660837307896133
1963	2.2876632559687216
1964	2.1813950033426597
1965	2.5592611128804768
1966	2.1516662293361324
1967	1.4957107209827691
1968	1.024764920374124
1969	1.2265321994097462
1970	1.0556899349238724
1971	1.1894245687946636
1972	1.2947491371918631
1973	1.0418313669015558
1974	0.9826007605406439
1975	1.0650142716121183
1976	0.6136513064441504
1977	0.6548152023690105
1978	0.7397181373109221
1979	0.4963073505169173
1980	0.5045073293093987
1981	0.6160547163727009
1982	0.5690963264668306
1983	0.5174096628397985
1984	0.41649594743100443
1985	0.37959130613068576
1986	0.83468860927028
1987	0.5671419094181561
1988	1.5051994907706159
1989	1.861557745196977
1990	1.4636427774535736
1991	1.1755405821348346
1992	1.4073167145404526
1993	2.013873043073245
1994	1.3619123038093113
1995	2.581760169052037
1996	2.014640727978848
1997	3.526012816450863
1998	2.811910914559293
1999	3.606833371852499
2000	4.9805269352135095
2001	5.188493170916488
2002	5.064943498821447
2003	5.881408257286637
2004	6.044302684769969
2005	7.1609835240173805
2006	7.581711659278105
2007	6.511719813327502
2008	6.981690882513386
2009	8.984112178024038
2010	9.187064992472441
2011	13.5496324086538
2012	13.562945649172791
2013	14.606847398922055
2014	16.551199999443963
2015	15.465473024133017
2016	13.810038581206353
2017	14.031107112904026
2018	16.564870263503582
2019	16.237903874737754
2020	13.68953152483027