Year	% of total imports
1998	7.132913878541267
1999	6.507659805881502
2000	5.852611819923933
2001	5.11660728554418
2002	4.455557979330099
2003	3.816943340171718
2004	3.8977002883028558
2005	0.9494129238995298
2006	1.4285150214062385
2007	0.8379705987509176
2008	0.27290634044298495
2009	0.3990266730202226
2010	0.45636182771915035
2011	0.9178541946567133
2012	2.225898296448328