Year	% of total exports
1995	4.611030890152267
1996	4.868162613191411
1997	9.847431246797209
1998	11.418068995102637
1999	12.18239250062589
2000	11.44934892152915
2001	14.413212539519234
2002	10.835169937613669
2003	9.167383824161304
2004	16.914693422297937
2005	16.65697813091918
2006	24.655270385469017
2007	26.518331286891488
2008	29.017900237358308
2009	36.554851618322566
2010	31.39315511431387
2011	27.787888174055773
2012	29.23864997515694
2013	28.682283130261542
2014	29.954687276226572
2015	30.46818762501114
2016	29.09233244039968
2017	27.752510109265483
2018	27.562258509793324
2019	26.801621491559935
2020	7.935696335178884