Year	% of merchandise exports
1975	7.280865458770756
1978	3.5061815272724908
1979	3.8159720890926683
1991	2.1871020983146217
1992	2.7684429762549967
1993	4.914150543718849
1999	2.395848124029469
2000	1.8448099662477837
2001	2.1275428805723693
2002	2.05622935515332
2003	2.0862127509247212
2004	1.9043433512299102
2005	2.746745081193699
2006	1.947992817216545
2007	1.863869679382695
2008	1.8460142641415804
2009	2.4969868579355006
2010	2.602712265620287
2011	2.2641973600654475
2012	2.351210805311069
2013	2.5588283723321323
2014	2.8111130083313274
2015	3.7066099373861623
2016	3.4685110713018754
2017	3.4529398785257412
2018	4.201156123098146
2019	4.371612300587467
2020	5.113490936182168
2021	3.8100234747990376