Year	% of total merchandise exports
1960	1.8912529550827424
1961	0.7389162561576355
1963	8.112582781456954
1964	4.017857142857143
1965	4.054054054054054
1966	4.9853372434017595
1967	4.401638629826549
1968	3.4738758929822104
1969	5.176908752327747
1970	6.0845839017735335
1971	6.581967213114753
1972	6.314185757815145
1973	5.130186074035111
1981	3.7175074536797386
1982	2.555105004139159
1983	2.668454672179709
1984	2.8240181602121104
1985	2.967593033957433
1986	4.316712125196439
1987	4.115772696119894
1988	1.174655431047002
1989	2.175206073593393
1990	3.483572620833612
1991	2.3843467633481135
1992	2.720757403404768
1993	11.123153246872748
1994	6.403417446080366
1995	11.438205525748321
1996	7.494197678467765
1997	12.649532040270683
1998	10.390038561484143
1999	11.310157266170037
2000	13.05355309195618
2001	13.066917708133563
2002	12.705960128970615
2003	13.513400810916368
2004	18.491313988043235
2005	19.912635310370735
2006	17.159181412370554
2007	19.02790997704896
2008	21.006437106370598
2009	15.47194514558687
2010	27.130037354723047
2011	33.932058739503276
2012	31.08831071965032
2013	25.276574494044997
2014	25.357839977594608
2015	25.198551809578902
2016	34.47859652093218
2017	33.278243058609576
2018	23.865632134004823
2019	16.483125271531442
2020	12.749883145094806