Year	% of total imports
1997	6.301784038737953
1998	6.275027278253899
1999	6.0927317897051125
2000	5.784984257417584
2001	6.032081369072049
2002	6.039346419234055
2003	5.217456035560533
2004	4.91515102090226
2005	4.866773297492504
2006	4.830939879248775
2007	4.871484118195969
2008	4.558100078014877
2012	4.501842942157714