Year	% of merchandise exports
1992	5.829024366515892
1996	2.122008082625732
1997	1.957275997760418
1998	2.7303522455708884
1999	2.3837237531005107
2000	0.2552198138417444
2001	2.6390587706573427
2002	3.408026738117749
2004	2.404510852648271
2005	3.6598109513598236
2006	3.506890251261943
2007	2.621056653773489