Year	% of GDP
1998	20.273470803760794
1999	15.614291841871106
2000	9.29520327119273
2001	12.600534814170473
2002	9.861236163115283
2003	-0.4367679864164215
2004	7.52016809211848
2005	1.771914050604876
2006	1.0527165262256597
2007	-3.4445949147714594
2008	-1.2281309626835435
2009	-1.0729444955997591
2010	6.18734358043311
2011	7.75436992619401