Year	% of total exports
1995	48.00848762188017
2003	25.934788624775734
2004	37.510083617298854
2005	42.71282817901124
2006	45.53148652560354
2007	42.46988244759895
2008	50.24876529051233
2009	41.40284899100209
2010	40.2201939594629
2011	42.29581785769157
2012	43.890244380603356
2014	50.17946586294251
2015	53.19636267985642
2016	46.71586982476623
2017	47.27121774956866
2018	49.33428750942334
2019	51.12171288427147
2020	26.835991530860714