Year	% of total exports
1995	8.63301755621789
1996	8.720479736404751
1997	8.551643980605508
1998	7.873105448677793
1999	7.667393665848283
2000	7.107309499066332
2001	7.214682153278912
2002	6.898171970024844
2003	7.028912674247784
2004	6.586225954344116
2005	6.172825309335616
2006	5.7478009338467935
2007	5.6962896045626845
2008	5.329520797672719
2009	6.198487905820882
2010	5.199972221780352
2011	4.607419791573611
2012	4.709856028244431
2013	5.030388810927501
2014	5.685915561168478
2015	6.7573423070062475
2016	7.378637650043285
2017	7.107455824970788
2018	6.866279936140159
2019	6.308926907346296