Year	% of total exports
1996	6.950293180192206
1997	9.210764194136441
1998	7.31093421150566
1999	7.819035552600765
2000	7.187017365552817
2001	9.135206155502592
2002	6.092453111870114
2003	6.609517407343793
2004	6.082721076729728
2005	7.765557834068396
2006	6.510413470002573
2007	5.881203394964358
2008	8.211167058404655
2009	6.265941575714316
2010	8.298644045180959
2011	4.025574202843419
2012	3.3603234140601463
2013	3.3982796176399788
2014	5.77342426005751
2015	6.063615736854653
2016	6.82560901297177
2017	6.35238523782937
2018	7.862160577241027
2019	9.375080561373734