Year	% of merchandise exports
1993	28.071046817499663
1994	25.618392688478515
1998	30.994401702155155
1999	41.94167674888149
2005	30.93710958105579
2006	27.18582534365323
2007	36.5144600023802
2008	48.91751304544845
2009	42.46872341602544
2010	1.1793811663652811
2011	1.326033846439711
2012	32.916646210096246