Year	% of total exports
1995	14.151441621050367
1996	13.063670021034431
1997	17.189277576382693
1998	20.243241996267074
1999	18.771238947701242
2000	18.467678628280403
2001	14.680038154625072
2002	10.039854076646737
2003	14.66429390077478
2004	26.08063186555557
2005	20.75372432983326
2006	23.367265907570314
2007	17.532574704831312
2008	16.53839991483933
2009	16.679953909892784
2010	19.7193172186888
2011	18.984608237739963
2012	20.90777206579857
2013	19.36023789622991
2014	20.786650293147307
2015	22.069861999420446
2016	26.89937301195701
2017	20.47228154557525
2018	19.94329600362484
2019	23.29981718205898
2020	7.801550668532564