Year	% of total imports
2003	7.080405606868391
2004	5.7040600394618926
2005	5.7821993781291665
2006	6.780390423071775
2007	5.9694440951502274
2008	5.06740369801635
2009	4.712766410394418
2010	5.491770164230547
2011	4.462881024407198
2012	3.316767419124956
2013	2.8252928830391255
2014	3.0982561282786443
2015	3.737786228380562
2016	3.1327305963130128
2017	3.1446097473127628
2018	3.4868760458118326