Year	% of merchandise exports
1977	18.409213272934412
1978	17.474183849754336
1979	17.648951995856645
2000	7.4025622083884235
2001	6.156927854961749
2002	6.14435814211024
2003	7.202554792548573
2004	6.904831801709654
2005	6.5963568713616665
2006	4.5507316967254905
2007	5.525785722549985
2008	4.525191405367728
2009	3.5288681637411163
2010	4.267708953813076
2011	5.007615803929677
2012	5.779426525597632
2013	4.317928424133744
2014	4.661500048304108
2015	3.0766612449239448
2016	4.484810080295687
2017	4.340959456664231
2019	4.678403469760245
2021	4.994626926796976