Year	% of total merchandise exports
1960	0.23166023166023164
1961	0.8032128514056224
1962	1.304631441617743
1963	0.3629764065335753
1964	0.055772448410485224
1965	0.20909566126502874
1966	0.10741138560687433
1967	1.0712035286704475
1969	0.26309220707902753
1970	0.7209293317092696
1971	0.6237359987554449
1972	0.2737524642393325
1973	0.03172667778137209
1974	0.3851658803735481
1975	0.6483645011969605
1976	0.8638056620736473
1977	1.1775608326872715
1978	0.14706599642016238
1979	0.04804407378251373
1980	0.028423872653495993
1981	0.2073374806466697
1982	0.1585806979100672
1983	0.1556593702708473
1984	0.057371306455551635
1985	0.05404442125296866
1986	0.049814528195758226
1987	0.11487670096989237
1988	0.17541009109294245
1989	0.14764884255957733
1990	0.33039615753372015
1991	0.029600593523390135
1992	0.22269625416012404
1993	0.4134278368079987
1994	0.7729813419558053
1995	0.8059370839988172
1996	0.8887066300276294
1997	0.9480313795199283
1998	0.5822657498571322
1999	0.8160492419290998
2000	0.4190147281354052
2001	0.4580979394270162
2002	1.9385289309663125
2003	2.1000272728160785
2004	1.137650716596011
2005	1.4898376051500664
2006	6.204833136578182
2007	3.189694671487322
2008	6.175980021920393
2009	4.94044215600171
2010	7.303991620202291
2011	7.199209835655316
2012	5.588253849608854
2013	3.781458133448331
2014	3.679723768393743
2015	3.125280824167119
2016	4.598619728663231
2017	4.710736359111782
2018	6.210505358134468
2019	4.221267821878926
2020	4.2764754033090355