Year	% of total merchandise exports
1997	2.0660692458542202
1998	1.7243060732065514
1999	1.4284226004599876
2000	1.7352644930544467
2001	1.5125893562028843
2002	1.6141394162206213
2003	1.825657221205151
2004	2.084328012815916
2005	2.134104767303763
2006	2.501389410455941
2007	2.6397259214414612
2008	2.842276538502165
2009	2.474084716567829
2010	3.0065032219137224
2011	3.3313076055017716
2012	3.574606819302051
2013	3.47048099516034
2014	3.1826402740834236
2015	2.745287622498683
2016	2.900861201505021
2017	3.1673421466559604
2018	2.9738256022618157
2019	2.9138569163027137
2020	3.105684224276719