Year	% of GDP
1990	17.194878535611704
1991	23.27001356852103
1992	20.74130658607061
1993	19.877147790641718
1994	16.088442795839697
1995	17.802005919805797
1996	13.844557630635729
1997	12.54473617754466
1998	12.80334078000425
1999	13.631608224522825
2000	11.700429486595551
2001	8.676180640315463
2002	8.89740463333914
2003	8.75240896375287
2004	6.178909427771472
2005	7.367518044005955
2006	6.987702209515506
2007	7.228842623785034
2008	9.756484690246245
2009	7.746227433341405
2010	7.603387804457553
2011	7.53744325836906