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	4.9633177776511275
2001	5.17425260111531
2002	5.053788627341835
2003	5.868549739089439
2004	6.032862041138912
2005	7.1483924339405505
2006	7.570312524428889
2007	6.501292024365898
2008	6.972692205092983
2009	8.967807255109221
2010	9.173721868107176
2011	13.523632525691795
2012	13.538321243826163
2013	14.571452398434435
2014	16.503744907147855
2015	15.398773680149136
2016	13.749557643573477
2017	13.974375457196158
2018	16.50524474835344
2019	16.174780690150545
2020	13.571617729085265