Year	% of total exports
2003	5.977541522565219
2004	5.600948866631524
2005	6.280206427654752
2006	6.343765302942616
2007	6.869264164422708
2008	5.639178660085233
2009	4.851897807896663
2010	5.583648067053967
2011	5.397740700477383
2012	5.5102401982077645
2013	5.0790581674758135
2014	4.597144931042826
2015	4.242007999215084
2016	4.49542788540361
2017	3.8958933165051777
2018	3.899608298273611
2019	4.212572909915749
2020	1.1136033959390688