Year	% of merchandise exports
1978	2.2367105851915485
1979	2.858993540108883
1991	31.699351879894795
1992	26.420184476903913
1993	21.172996397868143
1999	2.23500513584656
2000	1.9715648869783426
2001	2.191411870971161
2002	1.6259194387378486
2003	1.5393738527509173
2004	1.2735083914720016
2005	1.8211275336938966
2006	1.4524614087456331
2007	1.2844390306597804
2008	1.5799947686932945
2009	1.3638737010847946
2010	1.616997247941253
2011	1.7224145851584924
2012	2.114864510708849
2013	2.0635889025019867
2014	2.4020254731436923
2015	3.2740678626165374
2016	3.4229805962396087
2017	3.610600532411842
2018	3.7616375751695883
2019	3.3102096382176187
2020	3.5343805375473347
2021	4.25926778446501