Year	% of total merchandise exports
1997	1.8562194715833287
1998	1.6487204130107302
1999	2.027407186074354
2000	1.8919990441215604
2001	1.5945590943237637
2002	1.9742859129887207
2003	1.8866262189206526
2004	1.9011207541573503
2005	2.1289668732817395
2006	1.768988555123542
2007	1.8818475593688968
2008	1.739038577585296
2009	1.9191782425831274
2010	2.4129543825482944
2011	2.545742793006764
2012	2.5086675352201033
2013	2.4239472656350025
2014	2.602663660544863
2015	2.3720578367658582
2016	2.477793300999161
2017	2.334903763339501
2018	2.2043646316014085
2019	1.8746897548686192
2020	1.4092538588494183