Year	% of merchandise exports
1963	0.6423000282468053
1972	22.6563385108425
1973	21.10502624265357
1974	21.03137736348476
1975	15.342179735559224
1976	24.20789142978933
2000	0.5101017075564279
2001	0.47868623864324655
2002	0.3201648075471698
2004	0.2724676095186587
2005	0.1730472563596824
2006	0.31734608356264116
2007	0.25750251865471446
2008	0.00598364288541547
2009	0.20166366655711537
2010	0.2356657531223679
2011	0.1778556032135924
2012	0.21325918771759123
2013	0.1758691175680628
2014	0.08693549003862219
2015	0.18373571544406322
2016	0.0028879779907707765