Year	% of total merchandise exports
2007	0.8724593201801883
2008	0.2500803867092996
2009	0.20637144056203693
2010	0.208249855847553
2011	0.23295830000347792
2012	0.22180128355563303
2013	0.23123551192686664
2014	29.12871321737373
2015	29.02984653578202
2016	26.104215830705595
2017	30.779904160423005
2018	37.13231003658383
2019	43.8021684128013
2020	50.13228566539709