Year	% of total merchandise exports
1997	4.840202543497865
1998	3.9745160589647957
1999	3.5829705606992572
2000	3.7278276857216532
2001	3.5312440312707603
2002	3.3018331759715656
2003	3.6300555510364414
2004	3.7842039429349974
2005	4.559781976202364
2006	5.173220345020657
2007	6.407832624023123
2008	5.4050263858753755
2009	4.765385484558347
2010	6.9591867681511985
2011	8.88111885082719
2012	10.099973555925681
2013	8.330257377942447
2014	6.768142041443383
2015	6.779766880984325
2016	6.755895924438734
2017	7.244137116903887
2018	7.890559038024813
2019	7.423355960809018
2020	8.166246544000265