Year	% of merchandise exports
1978	13.617731743089697
2007	4.429543131937301
2009	2.7676012909659873
2010	3.2854617348799455
2011	4.94401078025336
2012	6.641930062022231
2013	3.333945198750099
2014	3.6656301035742995
2015	2.391085710030284
2016	3.3420634007786436
2017	3.382703023371924
2018	3.5150045437082866
2019	3.534727826530239