Year	% of GDP
1998	2.6767345403899725
1999	3.949708499095841
2000	3.9610519736842105
2001	7.285525866050809
2002	3.989393792172739
2003	3.100687486083278
2004	2.154637414383562
2005	6.087270854788878
2006	15.292616276858716