Year	% of total merchandise exports
1960	3.916073092958214
1961	3.699991173223672
1962	2.3818249401860645
1963	3.3698080168223807
1964	3.8744858744858743
1965	3.798177496886981
1966	2.765462801917159
1967	2.5594752333048665
1968	2.116044949278481
1969	1.6729897413750343
1970	2.276968448470387
1971	2.569441359691134
1972	2.2992552403364694
1973	2.6963003488035104
1974	1.8499104314151318
1975	1.4619684535535238
1976	1.4895531620082578
1977	1.6022037389144963
1978	1.8027923000128385
1979	1.6007141927195017
1980	2.986217401651088
1981	2.133441766601456
1982	1.8485504808797997
1983	2.0771614359868673
1984	1.6659359336581758
1985	1.86635382292252
1986	1.811892523819164
1987	2.1429463599845016
1988	2.709388781788072
1989	2.7332408740266554
1990	2.3212523625309656
1991	2.8881486529078937
1992	2.999796271834667
1993	3.748592398120122
1994	3.933753699427488
1995	5.260021151147026
1996	5.264994338120823
1997	5.3217478084052665
1998	4.857024532799118
1999	5.990870178552656
2000	7.257179189618138
2001	7.729397734011909
2002	8.157666331841277
2003	9.760945388770994
2004	10.453484618025573
2005	12.138293401933465
2006	10.12353446841483
2007	8.33252956472422
2008	8.164984132810181
2009	8.688439144686694
2010	8.986342856104667
2011	11.036049191300792
2012	11.808112548839041
2013	14.664197661036955
2014	14.80124166280785
2015	14.022193787352128
2016	14.730367443205916
2017	16.144286266654767
2018	18.263872110771565
2019	18.28753901802527
2020	18.774723794276245