Year	% of total exports
1996	1.246093722259186
1997	1.3036958949814637
1998	1.3102157841543751
1999	1.2421711855151676
2000	1.1399152591659165
2001	1.2956015922612167
2002	1.3283102324127651
2003	2.1994931643327127
2004	2.2718312192158043
2005	2.311341631869821
2006	1.5770728281246822
2007	1.548487030323167
2008	1.5481520332499843
2009	1.873824703033879
2010	1.7650784658762533
2011	1.3466780665633376
2012	1.772849108004892
2013	2.031099713423584
2014	2.40911203154826
2015	3.4770771743220394
2016	4.122612501569359
2017	4.223578258071532
2018	4.8692899961896785
2019	5.439668068156049
2020	1.4346126166533355