Year	% of total exports
1998	5.7209593980748314
1999	4.574984017302362
2000	3.2031130520484634
2001	4.60612335782675
2002	4.576976590105992
2003	4.429985228951247
2004	4.257267870302125
2005	3.193978537360895
2006	3.2709819686849966
2007	3.431444574832111
2008	2.7942935372731856
2009	3.7304870297353903
2010	2.791207288028966
2011	3.065624679503338
2012	3.142707125709661
2013	3.1774703053914783
2014	3.474180489676584
2015	5.7448502500828855
2016	7.476206325622839
2017	7.134416414945334
2018	6.20448011482535
2019	7.065994223474468
2020	1.8744035905969874