Year	% of total imports
1996	11.905173802449683
1997	12.32802383541911
1998	12.303848573498202
1999	13.265067151034607
2002	11.739468300536284
2003	12.876519921987414
2004	13.285201794032393
2005	13.98337459922806
2006	13.186091025381621
2007	14.688336062924495