Year	% of GDP
1997	13.842200081308752
2002	10.63098667811019
2003	10.712912834393679
2004	11.052261122846664
2005	12.044557246005697
2006	12.44271000016117
2007	12.450920990684768
2008	12.66475820640908
2009	12.979206171620241