Year	% of GDP
1998	41.9329332394937
1999	38.95251692385916
2000	40.45600542478204
2001	39.2768735183862
2002	33.94299262166592
2003	28.51321299202571
2004	25.489269013642364
2005	16.113732740540364
2006	25.224705484078484
2007	28.459237581161183
2008	21.243592449265535
2009	11.955731126660282
2010	23.34449041144292
2011	28.775905810109286