Year	% of total merchandise exports
1960	0.14587892049598833
1961	0.7175472928897586
1962	0.022859755400617212
1965	0.0003046043227922469
1966	0.08383639825988864
1967	0.0022084409373175446
1968	0.00038069616638960443
1969	0.006358762549805445
1970	0.058837271211026415
1971	0.04507147393843254
1972	0.06697334506986574
1973	0.014501961887486117
1974	0.17527002074129278
1975	0.3168224404573517
1976	0.2320935450159458
1977	0.23410391152466273
1978	0.0956095670823305
1979	0.5288431041223419
1980	0.5470761509462296
1981	0.9523259497465791
1982	0.9893855506588334
1983	1.085060403111694
1984	2.069549815285097
1985	2.0626415835253225
1986	1.909839954718705
1987	1.7862963395537585
1988	0.5323568024513987
1989	0.436820843378265
1990	0.6541610208953932
1991	2.2358283686746105
1992	3.0648481368639215
1993	3.643781712720006
1994	1.4137438395080681
1995	1.39936213421733
1996	1.0670404504688966
1997	2.6654709185594876
1998	2.353860338885425
1999	2.151637606420069
2000	0.8481085455176307
2001	1.1772208729790092
2002	1.0199136934246404
2003	1.0854311300758452
2004	2.5801040385693934
2005	2.282345512509346
2006	2.9480565217639794
2007	3.4817601084593517
2008	3.2786959613210964
2009	5.339054099435064
2010	5.338126833107925
2011	6.014682672197956
2012	7.703820673368577
2013	6.810478557908124
2014	8.219574521363285
2015	7.713760067767452
2016	9.047891879232031
2017	9.320370066200322
2018	9.861095303734169
2019	10.120897995377682
2020	9.72731946551525