Year	% of total exports
2005	1.0906750665707388
2006	1.1154445155511752
2007	1.1970165508690889
2008	1.1263618174712193
2009	1.3237104279577423
2010	1.6897320490522658
2011	1.3606759915223776
2012	1.3160436071248283
2013	1.470584282258878
2014	1.4039985560252728
2015	1.7118065962027826
2016	4.04344459076363
2017	3.959292551409394
2018	4.211116688996844
2019	3.991820517850743
2020	1.5062273952807523