Year	% of total merchandise exports
1997	1.9007752058584653
1998	1.9076253681312723
1999	1.8134513154276222
2000	1.762536996114748
2001	1.9978251997583463
2002	1.9308755167336507
2003	1.757729192289036
2004	1.8229558841743643
2005	1.8593150916754668
2006	2.024742463150088
2007	2.0415407352511377
2008	2.2919534995246647
2009	2.549972219902087
2010	2.431302797835706
2011	2.567135000441386
2012	2.8260008993224837
2013	3.0783697615165972
2014	3.09074204391434
2015	3.1287448008144323
2016	2.999129887173665
2017	2.980208701136985
2018	2.6611984732742986
2019	2.5996229366542565
2020	2.689283133043735